I have been trying to put a signature in my postings to auctiva forums. I know I am doing something wrong with my urls, but I am not sure what ?

I have tried various ways to code it, but all I get is the code showing up on the posts and not the links ?
I have put the code into a practice link, I would be so grateful if someone could have a look at it and tell me where I am going wrong.
http://www.practiceboard.com/?3112355
Thanks in advance.

Carol.