Hi, I have looked at the buying advice guides, and researched other forums, and found this RAM for my future Penryn MBP. I was hoping I could get a confirmation that this would really work (I guess I need to be 1000% sure before buying): http://www.buy.com/prod/ocz-4gb-2-x-2gb-sodimm-ddr2-667mhz-laptop-memory/q/loc/101/204887399.html I want to buy in advance (didn't order the MBP yet) because I want to take advantage of the $20 google checkout discount that is going on on Buy.com. Also, I've looked at other websites, but haven't found anything cheaper. I would appreciate if anyone who stumbled across something cheaper could post it here. Thanks!!