[Install...missing "data3.cab"]

I just received my game and tried to install. I get an error "Please insert disk 0 that contains the file data3.cab" What in the world is up with this? Please help!!!! :confused:

[white boxes, no words!!!]

I am new to this...I downloaded the demo and installed it. The game works fantastic, but I only have white boxes with no words. I can't see my unit names, strengths, distance... I have tried to change the resolution and drivers. Help!!!

P.S. Even with this problem I still ordered the game. It will be alot more fun to play with this problem resolved!!