Marshall, as Flux says, it's not too late to join, it has yet to start 
As for contributing, as stated several times, there is many ways to contribute. One way is to write fluff, and if that's not to your liking, there is possible to play warhammer over the internet, either using lorenz whfb, or either Ogre stronghold: http://www.ogrestronghold.com/forum/index.php?topic=14438.0, or at asrai.org: http://asrai.org/viewtopic.php?f=30&t=12201. Apart from that, I'm sure there will be som contest you can win
Cheers,
Dunrik
Assuming you meant nobody is playing TnG in your city, rather than nobody is playing warhammer at all, you could just play games against the people you normally play against, and submit those games. Unless the GMs changed this since the last campaign (I believe I read somewhere that you could still play against people who didn't participate in the campaign themselves, but Dunrik makes me doubt my memory
).
It'll probably be a bit harder to use the campaign army lists, since your friends might not be okay with you using them (fortunately mine don't have a problem with what I want to play, and they usually find the lists interesting enough to try them out themselves).
If, however, the rules were changed without me knowing (which, incidentally, isn't all that rare, and usually my fault
), then it looks like we're both stuck on typing duty for the summer
(or, as Dunrik suggests, online games).
