Hi. When I start the program (Windows 7, 64bit) , it asks to put a CD in an unknown device. Not only that. It doesn't stop asking. I can't even end the task. I have to reboot my pc to get rid of the window. Any suggestions? :)

Well that is weird i also have this problem somehow today but didn't notice it before or i haven't had this problem before, didn't play the game much.
It says windows no disc and i just keep pressing cancel or continue and somehow the message goes away and then it enters the game.
But i am on win xp so was the previous pc but it didn't have this problem.

Edit: after turning on pc today there was no such error, guess there was some error on my pc yesterday.

Just use OpenRCT. Don't even bother running the OG at this point.