As an avatar?
Make sure it's not bigger than 75x75 pixels
a profile picture
You cannot make a Gif in ms paint, I have no idea why you thought it would work, and-A profile picture is called an avatar...
im not making one in paint, just resizing
Adding to what the above poster said:Paint is stuff and kills animations like it does boners. Use GIMP or photoshop if you have the adobe master collection. Or if your image is a square, upload it on photobooth and have them resize it.
http://www.smileygenerator.us/gifresize/index.php