i have this harry potter cd game for the computer...except i got it from a different country (in asia) so the installing way is different. i've installed it before, a couple years ago, so i forgot...any idea how to do it?? i mean, its installed but when i press the 'play' button, it says 'please insert CD-ROM' , but the cd is in there the whole time. the store that i bought it from said something about "system files" or sumthing, sumthin with the word "system" or sumthin like that...so i dont know, but i have to apparently go through a bunch of files to get it working right, any suggestions?? HELP!