A couple of useful SVN things which helped me out today.
If you need to remove SVN folders, John Galloway has a good registry hack to add an item to the Windows context menu to do this using the command line. Quick and painless, and should be part of TortoiseSVN!
Alternatively, you can just download the reg file directly.
The other thing I came across is the TortoiseSVN global ignore pattern on Donn Felker’s blog. Useful for ensuring that your source control doesn’t get filled up with files that don’t need to be in there.