Noticed Balsa couldnt figure it out.
so just in case anyone else cant, here it is:
1. go to [You must be registered and logged in to see this link.]
2. upload the siggy
3. copy the "direct link" URL in the options they give you when you upload
4. in your edit profile under sig you click the icon that says Image
5. Paste the URL you copied from image shack and there you go
*Edit: dunno why sig isnt showing up on here, never worked with this brand of forum before cuz they fail lol