So heres the deal:
I purchased my copy of call of duty 2 from bestbuy and i played online with my brother with the same copy. but when i updated it it says cd key in use (which is bad in my case because i always want to play with friends who come over and family members) What i am wondering is if it is possible to make it so i could play with the same cd key at the same time with new patches?
I know that there isin't any cracks or links allowed but is there any way that i could be told instructions to modify this game myself?