I wouldn't download pixel art programs from unofficial websites. Reliable ones would be GraphicsGale, Windows XP Paint, Photoshop, GIMP(?) or Paint.net(?). I don't know if the last two support pixel art since I don't use 'em. I would double check though.
Though a bit hard to work with, GIMP can support Pixel Art and supports animation quite well (I found the trick).
#pleaseenablecommentssonexttimeicantellyouthiswithoutvm