Black ops dlc crack wont work

so, i downloaded a first strike crack and i installed everything the right way but when i try to load ascension by typing "\map /mp zombie_cosmodrome" in the console a black screen comes open with a clock on it. i suppose this is normal but its always stuck at 40.28 and i have to shut down black ops using task manager. help please? i wanna play ascension so bad!

im using the skidrow crack for black ops
system specs,
4GB RAM
Nvidia GeForce 9600M GT, 512MB
Intel Core 2 Duo T9400, 2GHz
Windows Vista home premium service pack2

same here skidrow needs to relase crack 7