avatar misery

I would love to get rid of the blurry old avatar I have, have read directions about sizing and can't for the life of me get it. Any EASY bright ideas for me???

Go to this site http://www.shrinkpictures.com/ and it will shrink your photo to the right size. Under #2 check custom and type in 100x100 in the box next to the word custom. Good luck. I look forward to seeing the new avitar!!