Well, what errors did you get? Did you run those errors through google or another search engine to see what other people did to fix those errors?
Hey unidox, I ran across this while searching for something else, maybe it will help with your code. Scroll down to the User Contributed Notes on the following link and read what is posted in several entries. It sounds similar to what you are trying to accomplish.
http://www.php.net/function.mysql-select-db
Hope it helps!