I would suggest you stay far away from the PS3 version of Black Ops...trust me, it's a mess. Here are some links for you to check out that will help you decide whether this game is right for you:
PS3 Call of Duty Black Ops Refund Petition with 7,000 signatures so far http://www.ipetitions.com/petition/codbo/signatures
CVG's latest article on Black Ops' connectivity issues http://www.computerandvideogames.com/article.php?id=280611
Digital Foundry's Xbox 360 vs Ps3 face off http://www.eurogamer.net/articles/digitalfoundry-call-of-duty-black-ops-faceoff
And here's a link to Amazon's Black Ops product page (check the user reviews) http://www.amazon.com/Call-Duty-Black-Ops-Playstation-3/dp/B003JVCA9Q/ref=pd_ts_zgc_vg_14210861_2?ie=UTF8&s=videogames&pf_rd_p=1279980062&pf_rd_s=right-6&pf_rd_t=101&pf_rd_i=14210751&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=1B4NHQAZJ0NRTV0EMN7H
