Due to the large number of new account requests by "robots" (and perhaps real people!) attempting to Spam the boards with junk all new accounts are manually activated.
Unfortunately it is difficult to tell the real account requests from the spam account requests.
So, to get an account activated you need to:
1) register as normal
2) e-mail me with your full username and request activation (this can be done by replying to the message you will get confirming your registration request).
If you don't contact me it is more than likely your new account will remain inactive.