Incidentally, when it asks you for a username, just type in whatever you want (so long as isn't obscene). You really don't have to register with the forum to use it now. And there's an explanation about to how to post pictures to the site in the 'General Discussions' box.
Again...apologies for the teething troubles. And if you're still experiencing problems, please feel free to send a virus to the programmers.
Addendum: Unfortunately...for the time being at least, the forum is now closed. Blame the spammers for that...well, them and the general lack of interest I suppose.