In about 15 minutes at 12:00pm pacific time registrations for the Call of Duty 4: Modern Warfare multiplayer beta will be opening. The question is whether Infinity Ward's servers will hold up!
Come 12:00pm pacific, or 3:00pm eastern, Xbox Live members from the United States will be able to register for the beta on a first come, first serve basis. You need to head over to the official COD4 website -
www.charlieoscardelta.com - answer three trivia questions correctly, and then you should be in.
Right now their website is up and down, with MySQL errors popping up every so often, so you best bet is to be sitting there refreshing the page at 12pm until the registration pops up.
Good luck and let us know if you get in!