The highly awaited sequel to Call of Duty series the Call of Duty 4: Modern Warfare will be relesed on 6th of November and the Single player demo will be published today. Xbox 360 players had their beta period while back and now it's time for PC users to test out the game in a single player campaign. The 1,4 GB demo is scheduled to be released at 9 AM PST and if I can count, it means something like 17 CET.

Infinity Ward has also published the system specs for the demo and for the game. Details below

“Recommended Specs”

CPU: 2.4 GHz dual core or better is recommended
RAM: 1GB for XP; 2GB for Vista is recommended
Harddrive: 8GB of free hard drive space
Video card: 3.0 Shader Support recommended. Nvidia Geforce 7800 or better or ATI Radeon X1800 or better

“Required (min) Specs”

CPU: Intel(R) Pentium(R) 4 2.4 GHz or AMD(R) Athlon(TM) 64 2800+ processor or any 1.8Ghz Dual Core Processor or better supported
RAM: 512MB RAM (768MB for Windows Vista)
Harddrive: 8GB of free hard drive space
Video card (generic): NVIDIA(R) Geforce(TM) 6600 or better or ATI(R) Radeon(R) 9800Pro or better

At the moment the only place you are able to download it is the Yahoo website and many other sites will be mirroring it afterwards.