How do I get the gears of war 3 beta without bulletstorm?

pre-order the game at any Gamestop and on the receipt there will be a code, this will give you access to the beta, note "pre-order before 4-25-11 that is when the beta begins".How do I get the gears of war 3 beta without bulletstorm?
Pre-order Gears 3 from Gamestop.How do I get the gears of war 3 beta without bulletstorm?
Preorder gears 3 and wait an extra week.