Ehhh people still use that program so don't worry about that. Hmmm I don't use this program personally (Photoshop, I use) but I would download the trial version of Graphics Gale. I've noticed a lot of people using/mentiong it here. If you still want to stick with MS Paint, though, I suggest you save in PNG but I think browsers do something with PNG. I'm not quite sure on that...