I agree with this : Then, to get traffic and regular visitors announce a Contest with any offer to your visitors with some conditions. So just ask your members to post few topics and refer some number of persons to win. Then you will surely get nice traffic. Also hire some bloggers to post about your forum's contest on their's blog. Note : If you are willing i could sponsor a 1 GB Shared Linux Hosting for you to include in your contest. Please PM me if you interested.
Thanks Priyan your idea about the blog is very good, and I will look into arranging that. Thanks a lot.