OK, here's what I had to insert in for Signature:
{url=http://i7.photobucket.com/albums/y256/farmpond/forums/Soybean1.gif}{IMG]http://i7.photobucket.com/albums/y256/farmpond/forums/Soybean1.gif[/IMG][/url}
Where I have { or }, replace them with [ or ]. I had to do that to show the code; otherwise, it would show the image again.
I also downsized the image; it's now only 5,924 bytes.