If you are an independent consultant like myself and need an affordable and high quality solution for your source control needs, run (don't walk) to SourceGear's Website. SourceGear's Vault integrates into Visual Studio.NET and uses SQL Server for its source control repository. It is much better than Visual SourceSafe and here is the clincher - it is free for a single user license!!! Just download the binaries off their website and you have a single user license of the software. Go here for more details.