Are you talking about your avatar and profile pictures? I would guess you use big pictures and after you upload them, they are resized automatically (and it causes lost of quality). Avatars size is 80px X 80px. Make your avatar with these dimensions and upload it. It will not be blurry. Or just send me the picture you want to use as your avatar and I'll do the rest.
i found the ms office photo manager on a different computer. my pic IS fuzzy as the original. all of them, i will try to get a pic from my digital camera instead of the web cam. the web cam pics look a bit blocky and shadowy because its junk i think.