Black Ops Steam Help

I bought black ops last year during may and i want to play it again, i got band on the account i activated it from, and now when i make a new account and download and try to install black ops it says key duplicate cannot be used and sometimes it says cannot connect to steam network. And i bought it from game stop ( Try Media) and it says i have 3 activation remainings.

If this cannot be solved is there a cracked version that has multi player for zombies, i know if its cracked u cannot play on black ops original servers.

Thanks in an advance.

You can download the SKIDROW crack and play zombies solo. Maybe there is a way to play with friends via Hamachi. I'm sure YouTube can help you.