Modern Warfare 2 PC Minimum System Requirements

Updated w/ actual PC minimum system requirements via Robert '402' Bowling.

Modern Warfare 2 PC MSR
OS: Microsoft Windows XP, Windows Vista and Windows 7 (Windows 95/98/ME/2000 are unsupported)
Processor: Intel Pentium 4 3.2 GHz or AMD Athlon 64 3200+ processor or better supported
Memory: 1 GB RAM
Graphics: 256 MB NVIDIA GeForce 6600GT or better or ATI Radeon 1600XT or better
DirectX: Microsoft DirectX(R) 9.0c
Hard Drive: 12GB of free hard drive space
Sound: 100% DirectX 9.0c compatible sound card
Internet: Broadband connection required for Multiplayer Connectivity. Internet Connection required for activation

Also found on the back of the PC packaging found on GameStop.com is the following Steam notice...

Notice: Product offered subject to your acceptance of the Steam Subscriber Agreement ("SSA"). You must activate this product via the internet by registering for a Steam account and accepting the SSA. Please see www.steampowered.com/agreement to view the SSA prior to purchase. If you do not agree with the provisions of the SSA, you should return the game unopened to your retailer in accordance with their return policy.