Thanks for help me!

I've renamed AccountList file and class to Accounts.... as you tell me!
in the table DETAILVIEWS_RELATIONSHIPS
ba04dea2-fcf0-4e66-9e0c-1d1dc03fe233 False NULL 06/08/2007 0.00.00 NULL 06/08/2007 0.00.00 Campaigns.DetailView Accounts Accounts 4

I've created Accounts.ascx and Accounts.ascx.cs files

Accounts.ascx

<%@ Control CodeBehind="Accounts.ascx.cs" Language="c#" AutoEventWireup="false" Inherits="SplendidCRM.Campaigns.Accounts" %>
<script type="text/javascript">
function ChangeProspectList(sPARENT_ID, sPARENT_NAME)
{
 document.getElementById('<%= txtPROSPECT_LIST_ID.ClientID %>').value = sPARENT_ID  ;
 document.forms[0].submit();
}
function ProspectListPopup()
{
 return window.open('../ProspectLists/Popup.aspx?ClearDisabled=1','ProspectListPopup','width=600,height=400,resizable=1,scrollbars=1');
}
</script>
<div id="divCampaignsProspectLists">
 <input ID="txtPROSPECT_LIST_ID" type="hidden" Runat="server" />
 <br>
 <%@ Register TagPrefix="SplendidCRM" Tagname="ListHeader" Src="~/_controls/ListHeader.ascx" %>
 <SplendidCRM:ListHeader Title="ProspectLists.LBL_MODULE_NAME" Runat="Server" />
 
 <table width="100%" border="0" cellpadding="0" cellspacing="0" Visible="<%# !PrintView %>" runat="server">
  <tr>
   <td style="padding-bottom: 2px;">
    <asp:Button Visible='<%# SplendidCRM.Security.GetUserAccess("ProspectLists", "edit") >= 0 %>' CommandName="ProspectLists.Create" OnCommand="Page_Command" CssClass="button" Text='<%# "  " + L10n.Term(".LBL_NEW_BUTTON_LABEL"   ) + "  " %>' title='<%# L10n.Term(".LBL_NEW_BUTTON_TITLE"   ) %>' AccessKey='<%# L10n.AccessKey(".LBL_NEW_BUTTON_KEY"   ) %>' Runat="server" />
    <input type="button" class="button" onclick="return ProspectListPopup();" title="<%# L10n.Term(".LBL_SELECT_BUTTON_TITLE") %>" accessKey="<%# L10n.Term(".LBL_SELECT_BUTTON_KEY") %>" value="<%# L10n.Term(".LBL_SELECT_BUTTON_LABEL") %>" />
    <asp:Label ID="lblError" ForeColor="Red" EnableViewState="false" Runat="server" />
   </td>
  </tr>
 </table>

 <SplendidCRM:SplendidGrid id="grdMain" Width="100%" CssClass="listView"
  CellPadding="3" CellSpacing="0" border="0"
  AllowPaging="false" PageSize="20" AllowSorting="false"
  AutoGenerateColumns="false"
  EnableViewState="true" runat="server">
  <ItemStyle            CssClass="oddListRowS1"  />
  <AlternatingItemStyle CssClass="evenListRowS1" />
  <HeaderStyle          CssClass="listViewThS1"  />
  <PagerStyle HorizontalAlign="Right" Mode="NextPrev" PageButtonCount="6" Position="Top" CssClass="listViewPaginationTdS1" PrevPageText=".LNK_LIST_PREVIOUS" NextPageText=".LNK_LIST_NEXT" />
  <Columns>
   <asp:TemplateColumn HeaderText="" ItemStyle-Width="1%" ItemStyle-HorizontalAlign="Left" ItemStyle-Wrap="false">
    <ItemTemplate>
     <asp:ImageButton Visible='<%# SplendidCRM.Security.GetUserAccess("ProspectLists", "edit", Sql.ToGuid(DataBinder.Eval(Container.DataItem, "ASSIGNED_USER_ID"))) >= 0 %>' CommandName="ProspectLists.Edit" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "PROSPECT_LIST_ID") %>' OnCommand="Page_Command" CssClass="listViewTdToolsS1" AlternateText='<%# L10n.Term(".LNK_EDIT") %>' ImageUrl='<%# Session["themeURL"] + "images/edit_inline.gif" %>' BorderWidth="0" Width="12" Height="12" ImageAlign="AbsMiddle" Runat="server" />
     <asp:LinkButton  Visible='<%# SplendidCRM.Security.GetUserAccess("ProspectLists", "edit", Sql.ToGuid(DataBinder.Eval(Container.DataItem, "ASSIGNED_USER_ID"))) >= 0 %>' CommandName="ProspectLists.Edit" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "PROSPECT_LIST_ID") %>' OnCommand="Page_Command" CssClass="listViewTdToolsS1" Text='<%# L10n.Term(".LNK_EDIT") %>' Runat="server" />
     &nbsp;
     <span onclick="return confirm('<%= L10n.TermJavaScript("ProspectLists.PROSPECT_REMOVE_PROSPECT_LISTS_CONFIRM") %>')">
      <asp:ImageButton Visible='<%# SplendidCRM.Security.GetUserAccess("Campaigns", "edit", Sql.ToGuid(DataBinder.Eval(Container.DataItem, "CAMPAIGN_ASSIGNED_USER_ID"))) >= 0 %>' CommandName="ProspectLists.Remove" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "PROSPECT_LIST_ID") %>' OnCommand="Page_Command" CssClass="listViewTdToolsS1" AlternateText='<%# L10n.Term(".LNK_REMOVE") %>' ImageUrl='<%# Session["themeURL"] + "images/delete_inline.gif" %>' BorderWidth="0" Width="12" Height="12" ImageAlign="AbsMiddle" Runat="server" />
      <asp:LinkButton  Visible='<%# SplendidCRM.Security.GetUserAccess("Campaigns", "edit", Sql.ToGuid(DataBinder.Eval(Container.DataItem, "CAMPAIGN_ASSIGNED_USER_ID"))) >= 0 %>' CommandName="ProspectLists.Remove" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "PROSPECT_LIST_ID") %>' OnCommand="Page_Command" CssClass="listViewTdToolsS1" Text='<%# L10n.Term(".LNK_REMOVE") %>' Runat="server" />
     </span>
    </ItemTemplate>
   </asp:TemplateColumn>
  </Columns>
 </SplendidCRM:SplendidGrid>
</div>

Accounts.ascx.cs

namespace SplendidCRM.Campaigns
{
 /// <summary>
 ///  Summary description for ProspectLists.
 /// </summary>
    public class Accounts : SplendidControl
 {
  protected Guid            gID                ;
  protected DataView        vwMain             ;
  protected SplendidGrid    grdMain            ;
  protected Label           lblError           ;
  protected HtmlInputHidden txtPROSPECT_LIST_ID;

protected void Page_Command(object sender, CommandEventArgs e)
  {
   try
   {
    switch ( e.CommandName )
    {
     case "ProspectLists.Create":
      Response.Redirect("~/ProspectLists/edit.aspx?PARENT_ID=" + gID.ToString());
      break;
     case "ProspectLists.Edit":
     {
      Guid gPROSPECT_LIST_ID = Sql.ToGuid(e.CommandArgument);
      Response.Redirect("~/ProspectLists/edit.aspx?ID=" + gPROSPECT_LIST_ID.ToString());
      break;
     }
     case "ProspectLists.Remove":
     {
      Guid gPROSPECT_LIST_ID = Sql.ToGuid(e.CommandArgument);
      SqlProcs.spPROSPECT_LIST_CAMPAIGNS_Delete(gPROSPECT_LIST_ID, gID);
      Response.Redirect("view.aspx?ID=" + gID.ToString());
      break;
     }
     default:
      throw(new Exception("Unknown command: " + e.CommandName));
    }
   }
   catch(Exception ex)
   {
    SplendidError.SystemError(new StackTrace(true).GetFrame(0), ex.Message);
    lblError.Text = ex.Message;
   }
  }

  private void Page_Load(object sender, System.EventArgs e)
  {
   gID = Sql.ToGuid(Request["ID"]);
   Guid gPROSPECT_LIST_ID = Sql.ToGuid(txtPROSPECT_LIST_ID.Value);
   if ( !Sql.IsEmptyGuid(gPROSPECT_LIST_ID) )
   {
    try
    {
     SqlProcs.spPROSPECT_LIST_CAMPAIGNS_Update(gPROSPECT_LIST_ID, gID);
     Response.Redirect("view.aspx?ID=" + gID.ToString());
    }
    catch(Exception ex)
    {
     SplendidError.SystemError(new StackTrace(true).GetFrame(0), ex.Message);
     lblError.Text = ex.Message;
    }
   }

   DbProviderFactory dbf = DbProviderFactories.GetFactory();
   using ( IDbConnection con = dbf.CreateConnection() )
   {
    string sSQL;
    sSQL = "select *                         " + ControlChars.CrLf
         + "  from vwCAMPAIGNS_PROSPECT_LISTS" + ControlChars.CrLf
         + " where CAMPAIGN_ID = @CAMPAIGN_ID" + ControlChars.CrLf
         + " order by DATE_ENTERED asc       " + ControlChars.CrLf;
    using ( IDbCommand cmd = con.CreateCommand() )
    {
     cmd.CommandText = sSQL;
     Sql.AddParameter(cmd, "@CAMPAIGN_ID", gID);

     if ( bDebug )
      RegisterClientScriptBlock("vwCAMPAIGNS_PROSPECT_LISTS", Sql.ClientScriptBlock(cmd));

     try
     {
      using ( DbDataAdapter da = dbf.CreateDataAdapter() )
      {
       ((IDbDataAdapter)da).SelectCommand = cmd;
       using ( DataTable dt = new DataTable() )
       {
        da.Fill(dt);
        vwMain = dt.DefaultView;
        grdMain.DataSource = vwMain ;
        // 09/05/2005 Paul. LinkButton controls will not fire an event unless the the grid is bound.
        //if ( !IsPostBack )
        {
         grdMain.ApplySort();
         grdMain.DataBind();
        }
       }
      }
     }
     catch(Exception ex)
     {
      SplendidError.SystemError(new StackTrace(true).GetFrame(0), ex.Message);
      lblError.Text = ex.Message;
     }
    }
   }
   if ( !IsPostBack )
   {
    // 06/09/2006 Paul.  Remove data binding in the user controls.  Binding is required, but only do so in the ASPX pages.
    //Page.DataBind();
   }
  }

  #region Web Form Designer generated code
  override protected void OnInit(EventArgs e)
  {
   //
   // CODEGEN: This call is required by the ASP.NET Web Form Designer.
   //
   InitializeComponent();
   base.OnInit(e);
  }
  
  /// <summary>
  ///  Required method for Designer support - do not modify
  ///  the contents of this method with the code editor.
  /// </summary>
  private void InitializeComponent()
  {
   this.Load += new System.EventHandler(this.Page_Load);
   // 11/26/2005 Paul.  Add fields early so that sort events will get called.
   grdMain.DynamicColumns("Campaigns.ProspectLists");
  }
  #endregion
 }
}

What to modify in this 2 files??

Now I will create the SP ... but are there other changes in other files??

Thanks!!