Don't bother with it Ripley. It's been done dozens of times already, yet the idiots will continue to rant about why AH sucks and about why WarBirds is great (and vice versa here on this board), and why one respective community is superior to the other. It won't make a bit of difference to anyone who's open minded enough to actually give the other one a try if they're interested, and only goes to prove how narrow minded some are. We're all one big community who (for the most part) are interested in WWII history and who all love to fly and blow toejam up with virtual WWII war birds - some choose to fly WarBirds, some choose to fly Aces High, or even one of the others.
As for registration, I think the moderators over there close it down now and then, tho' I'm not sure why. I know they've closed it and opened it back up at least one time in the past. They'd probably set an account up for you if you emailed 'em.
SOB