These tickets will sell out very quickly once they open up to the Registration Of Interest sales at 10am GMT on the 1st Feb.
I think last year they sold the allocation (Approx. 50,000) in around 45 minutes, so if you are going to do it this way make sure you are online when they go on sale, which will be 2AM on the West Coast!
The capacity at Wembley is 90000 they sell a certain amount at this stage (similar to the 50k I mentioned) and hold out the rest for the time being for other uses e.g. Corporate, Team families etc. They usually have a couple of sales at a later date when they sell any remaining tix. I wouldn't wait until they go on General Sale (i.e. after the registry of interest sales period finishes), so if you can still do and want a decent ticket complete the Registry of Interest here http://www.nfluk.com/
I've sat in the Lower Endzone for the last 3 London Games, they are good seats and im hoping to get in there again and hopefully see some of you guys.
[ Edited by Stuuk on Jan 27, 2010 at 5:22 AM ]