Whoa, you've been gone for a while, I see. Things might be slightly different for you than they were back in the day. The forum updated to 3.7 eleven months ago, which introduced revolutionary ideas such as visitor messages and profile customisation. On top of that, we've got blogs and a bunch of new forum themes. And of course, there are loads of other new things as well, but none of those things are anywhere near complicated so you'll be fine.
But anyway, welcome back to PC. Stay active for longer this time, m'kay?