Hi Bill.I've tried VisualSVN, and it seemed OK for a start. Didn't have any problem related to StrataFrame with SVN, but with the SVN environment itself. Probably for my lack of knowledge, don't know.
Then, I went to SouceGear Vault. Been using it for some months now, easy to use, everything on the SQLServer, also integrates well into VisualStudio, not so expensive as TeamSystem, a dream to become true some day...
This wasn't of much help, I know... just sharing some experience with you.
Cheers.