He means the sigs to show I think. They need to be hosted by a website:
www.Imagetitan.com,
www.TinyPic.com,
www.Photobucket.com, etc....
Then you go to User CP, go to edit signature, then type:
[IMG...]Your address here[/IMG...]
^^You can do that for any post as well. Just put in the code for it. Go to post reply to see your options, if you can't see them then PM me. px