Ok, I'm home... It's called AI picture Utility. It has lots of annoying 'Register Now!' pop-ups when you save and close the program, and it will frequently prompt you to register, but it is free forever.
You can't actually edit pictures with it, besides from colour editing (Gamma, brightness, etc etc) but you can save as most file types and edit the amount of compression that you apply.
I like it (and I have the full version of PsP anyway) for simple gamma correction and saving file types. I only really Downloaded it to find one for a friend who didn't have PsP.
Here is the link to get it:
http://users.aol.com/aipict/aipict.html
Hope this helps.