Simple question. I'm pretty sure you can but i am just making sure because i am about to go get a new one in about 1 hour. Thank you in advance! When i get back on, it will be +rep for you! =)

No. You can't get a new one if you bring up the old one. But at Wal-Mart, your average joe works there, and more than likely not familiar with PS3 consoles, so if you try doing what you want with it, which I forgot, and it fails, then restore it back to factory settings, and bring it back for an exchange. It MIGHT work. Don't know. With things like that, Wal-Mart may require you to go directly through Sony for their hardware mishap. Good luck to you on this though...

Try doing what? I am sorry i just can't understand you....

Ok. Here's the answer to your question. Yes. If you bought a new PS3, you'll be able to play your awesome Black Ops again. I'm assuming you're home now? Plug it in, OBVIOUSLY don't update, and jailbreak your console. Enjoy. Have fun.