It always matters what OS you have.

I believe they (the man) changed Image Veiwer to Photo Gallery in a late release of XP (I have it too.) So yes that should work. Hmm, actually mine's called Microsoft Photo Editor. .... Hmm, seems that's part of Microsoft office, so I guess I was wrong.

FastStone Has a good one too.
http://www.faststone.org/Sorry about M$ not supporting image viewer in windows vista.
Edit: If you don't want to download software to edit your images you can use
http://www.imageeditor.net/ to edit them for you for free. Sadly it works best with IE.
