hey, so yea , i decided to make a small tutorial to link a image
if you want a original button img , when you are done:

1.upload it to Photobucket, and take the Direct link(when you click it it's automaticly Copied.

2.go on http://www.graalians.com/forums/usercp.php > Edit signature

3.in the box:
write [ url=http://www.example.com] [ img]https://www.Direct IMG link.png[/img] [/url]
example :


hope it helped