cracks

i have just recently accuired a burnt game from scotland to play here in canada. i have installed it already but when i try to pay it, it says i have to insert the original cd to play. the person who gave me the game said i have to copy some kind of "crack" into my C drive. i have the crack already, i can see it under MY computer in the D drive where my CD is located. its something like 01_07_08_12_37 but i dont know what to do with it. do i just have to copy that code onto a word document and put it in my game folder or something?
any help would be appreciated