Ok, I can get the script to run, but I can't get it to recognize that I'm logged in. It just keeps giving me the same unregistered message whether I login through the forums or through the script itself. I've setup the cookies as stated previously in this thread, so I'm not sure if that is it or not. Thanks for you help, I've been looking for a hack like this for a long time!
EDIT: To see what I'm talking about you can go to my test page @
http://www.lhbcyouth.com/test2.php