Do a rebackup.
If U have burn in to a CD-RW U can erase that

If U have burn in to a CD-R sorry for U

U need to burn it again.
Do a 1:1 copy with Alcohol 120% or BlindWrite tools.
If U don't wanna spend money on CD-R disc or don't wanna play the game with out CD. Download Alcohol 120% dump your original CD:s with your favorite tool. Then mount the image in Alcohol 120%. U can't now run the game with out CD and with out crack.
If the game still false. U have to contact the tech support.
If U have no clue what I'm talking about. use the search button and search for more info. It's have been talking alot of those tools

or read the stickeys (FAQ stickey

) to find out more info