Since like Windows 7 was released and I first started using it, I had problems accessing *some* (yeah, that's the weird part, *some*) Windows 2003 file and printer shares. Man, it was driving me crazy.
The problem has to do with NTLMv2 and friends. Now, for the solution, do read on http://www.tannerwilliamson.com/2009/09/windows-7-seven-network-file-sharing-fix-samba-smb/
I have been using Bazaar as a revision control tool. I have really become used to the ease that not having to create a central repository gives me.
Bazaar for Windows used to include a nifty "Bzr Here" context menu entry which appears to have been deprecated in favor of the nice but alpha-quality Tortoise Bazaar.