Unreal tournament 3 demo download problem

[ryan321]

i just downloaded unreal tounament 3 the demo from techspot. And as soon as i was done with the downloading, the normal icon came up. so then i clicked on it so i can play the video game. and then the next thing you know, it says there is no disk in the drive! i thought demos dont need disks. And then after that, it asked me to send error report. CAN SOMEONE PLEASE HELP ME!!!!