...I've deleted all of my Sims 2 downloads, and now I realise that I really want them back and it's messed up my game quite a bit.

I'm using Windows XP. Can I use system restore to get these back? I read somewhere that it doesn't affect personal files (I'm assuming these would be included as it's saved under my documents...), but I can recall seeing a friend of mine use system restore to get back a file under my documents.

Any help would be greatly appreciated.