I don't know where to get it, but I know hat your talking about. It's the series where Ruch was a red dog who transformed. Roll was Megaman's ditz sister, and the opening consisted of about 10 words: Super fighting robot..... Megaman!

EDIT: BTW, I don't think X was made into an anime, though it would have rocked.

EDIT 2: Go to torrentspy.com. I think they have the first 9 episodes there. Type in Megaman, but IDK if it really is the show....