I agree. no one can tell you what to do with your board.
anyway
Here is my hack I just wrote.
much better hack.
I added a option in control panel to enable or disable HTML in sigs.
http://elym.tripod.com/ELYS_HTML_IN_SIGNATURE_WITH_CP_HACK.txt like everyone said before.
it is SECURITY RISK !!!!
anyone can mess your ubb up with their tricks in their signatures. otherwise it is YOUR UBB and responsibilty.