I've had my site for around 7 years, and not a single page of my forum is indexed. It only does the main page and the main forum page. But never goes into the topics or anything else inside the forum itself.

here is the site in case you need to look at the coding:
http://www.doink.biz
http://www.doink.biz/forum

pls answer my questions ;

do you have quality backlinks for your site ?
have you made a sitemap for your site ?

1. Yes
2. No

How would I make a site map for a forum?

rectify the redirection issue in your own site navigation for a start.

all your links are missing a trailing slash and the server is then responding with a 301 redirect. You are also serving session IDs in the url
Fix those and you should have a chance of getting more pages indexed.

Ok I fixed #1 and supposebly I fixed number 2 as well (I don't know what Session IDs are but I ran a search for my forum, found a solution, and applied it.) Let me know if I did it wrong.

Thank you chrishirst for the suggestions, I really appreciated.

I think you should just maybe wait a while and everything will be just fine