hey i have a website at geocities... http://www.geocities.com/pratikbagaria and now i want to have a forum on it.. so can u plz help me...

Forums have nothing to do with Web Graphics or Multimedia oo;;

There are free forums out there, just google. Here's what I found in one search:

http://invisionfree.com/
http://www.proboards.com/index.html

And more. If you want something more advanced, you will have to pay for them and get a new host. ~_~