Here's a sample signature:
http://www.grahamedgecombe.com/wurm/sig.php?r=255&g=255&b=255&img=6&text_dynamic=pcTotal&dynx=200&dyny=80&text_normal=%3D+Ancient+-+Wurm+Online+Player+-+Member+of+DarkWood+%3D&staticx=5&staticy=20&/file001.png
It exports HTML, wikicode and BB code.