Wow- I couldn't wait to play this one!
As soon as the gamespot 'free demo' mail arrived in my inbox, I rushed over to download it.
After 5 hours of downloading only 636 MB of virutally dial-up bandwidth (Yes and I even have 2MBPS Broadband). I virus scanned the zip.
After seeing thousands of MD5 algorithm keys flash past the screen during the virus scan I waited 12 minutes for it to finish scanning, before burning it to disk and transferring it to our main PC which is not connected to the net for security reasons.
Then, I executed the zip.
After 8 minutes of installing it then told me it was aborting because we 'did not have Service Pack 2 installed'.
Yes, this could only be Microsoft.