The HD for my 2007 MacBook needs to be replaced, and I want to make sure I get the right one. The original hard drive is a SATA drive at 1.5Gbs speed (160GB). Would I be able to put a SATA II drive in there, or one at 3.0Gbs speed? I'm looking for the easy route here, and I've heard that if I get a SATA II drive I need to modify it first before installing it. Thanks in advance!