Im sure tons of people will have the same problem.
You have the demo of your steamaccount, bought DVD and now you try to install it, but STEAM starts a download.
Now this problem is caused by the demo you have on your account and the Autostart function of your Computer.
Just go manually on your DVD-drive and start the install from there manually.
Thats it! After install you go online on steam and get the patch.
Koc
