Shoutbox

I made this emoticon and have saved it as an animated .gif and want to send it to my friend.
The problem is that it is so small you can't see it properly, the original image is 90x101 i want it to be (as close to as it can be to) that size when it send it in a chat window.
Is there a program to help me with this or do i have to do it manually?  Is it even possible?  I've seen other emoticons that weren't standard size.  So i figure it must be. Tell me if that is wrong.

I think the max is 50x50, so it will be resized to something similar to that.

The files wich store the emoticons must be located somewhere so that i could modify them and make the emoticon bigger.

so confused because i have seen a emoticon that looked about 70x30

fixed it by changing the font to ariel black