prob. backing up Diablo 2 ?? Help ??

[fattboy]

"Having prob. backing up Diablo 2".
I've copied all 3 cds using Clone Cd fine. They install perfectly and even play the intro.... But when I select a character and give him a name. Try to continue. I get a black screen as if its loading and "WHAM!" the game FREEZES... Every single time.

I heard Diablo 2 is suppose to be heavily copy protected.
Is their a better way to copy???
Can anybody help me out???