Game demo will not launch!

[Spac]

Ok, so I downloaded the Empire at War demo, I checked it was the right size, in case there was an error. So I install it, and thats all fine, but when I actually try to start the game I get an error:


My Computer:
Athlon64 3000+
1024MB DDR400 RAM
GeForce 6600GT (With the latest 81.98 Forceware Drivers + DirectX 9.0c)
80GB SATA HDD

I have no idea what could be the problem!

[Spac]

Whoops, I just found out theres a big thread in the tech forum that is helping answer this, silly me -_-