Marcus Nylander's VSS Plugin for Eclipse has been upgraded to to COM automation - it's much faster now.

Funnily enough, I've had to do some VSS automation myself, in Python. VSS's object model is a bit nasty, but it's easy enough to write an OO wrapper while clutching the documentation. Then you can use the wrapper, and forget all about the ugly stuff underneath.

I'll probably clean this VSS stuff up and post it at some point.