I think it is hard to get it to the correct size using paint. You can try saving it as a .jpg file instead of a .png. My computer just crashed, so I am reluctant to open my Photoshop right now. If someone else doesn't beat me to it, I will resize it for you when my computer is feeling a bit better.
Thanks. I'll see whay I can do. I know how to use a computer really well because my brother is a computer genius(actually built all of his computers piece by piece) and he taught me a bit of what he knows. However, the computer I'm using doesn't have photoshop. My other computer has it but I haven't unpacked it yet.
Actually you post them in the "Requests" thread. If you have them up on Photobucket or another Photo host, you should just post links to the photo's. It's always more helpful to work with larger pictures in creating signatures.