If your site is new it could take awhile. You need to get your site "out there". If you post in other forums that are similar to yours then you could mention your site there. Eventually Google and other search engines will discover your site. My forum has been active for about 4 years and I only have a little over 300 members. Of course my site is specific to a certain jazz artist so there aren't a huge number of fans that necessarily want to join. Regardless, I'm still happy with it.
Wicked. Is there anything else i can do google wise...? At the moment i'm like 5th on every single page even if i search the website name: Musical Matters