|can you explore the CD/DVD and find the HTM file it's looking for?|
i'm assuming this is a legitimately purchased copy, because you said the game shop cleaned it for you. if it's pirated, then yeah, your media's probably jank.
you know anyone else who plays this game? try it with their CD media. Do you have another PC (even a friend's)? try installing and playing the game with this CD media onto that machine. That'll indicate if it's a problem with your disk media, or with your installation.