> > http://store.steampowered.com/?cc=us
> > YES WE CAN(;´Д`)住所はUSとかUKとか
> ｸﾚｶで弾かれると思う

Dear ********, 
Thank you for your recent purchase on Steam. 
Your credit card has been charged as detailed below. 
This email message will serve as your receipt. 
You can also access your Purchase History online at any time.
Call of Duty: Modern Warfare 2 (NA)   59.99 USD 
Subtotal   59.99 USD 
Tax   0.00 USD 
Shipping   0.00 USD 
--------------------------------------------------------------------------------
Total   59.99 USD 
Credit card type   Visa 
Card number   XXXXXXXXXXXX**** 
Confirmation Number   **************** 
Date Confirmed   Sat Nov 14 07:13:28 2009 

国名と州名と郵便番号が適当ならOKらしい
日本で売ってないMW2も買えたよ
ただしｱﾒﾘｶの州の中には余計に消費税かかるところもあるみたい(;´Д`)

参考：2009/12/24(木)21時30分36秒