Sorry, I'm not familiar with the forum package that you are using so I can't really help you further...
Do you own the server where to forum is hosted (do you have access to the
HTML /
PHP source files), (it looks like you do). If you have access to the files, you just have to find the page where you want the form to appear and paste the code into the file.
If you are totally lost then maybe you should PM me and we can see if we can work something out...