We have been planning this migration for more than a month.  In that time we have been upgrading our servers with bigger hard disks and more RAM. 

The migration did not go as smoothly as we had hoped, but at least we can breath now that the migration is complete.  The main problem we ran into was with one particular node in our project tree that was not accessible from the COM interface that SourceSafe provides.  After several failed migration attempts, we finally followed a tip on the SourceGear forum to backup and restore the SourceSafe database using SourceSafe utilities.

Sadly, the import utility was not able to migrate all of the labels.