WHen you burn a copy of this game, using whatever materials you may use, you can just replace the EXE provided (hitman.exe) with the one from the PC Games files section on this page. To install it, all you have to do is click OK to all the little buttons and then let the puppy go, replace, and you'll never need a CD again padre.
THat is, of course, if you got the NOCD/Fixed EXE crack. Did I help you out?