I searched for threads, and I guess I probably didn't search well because I didn't really find anything too new. Basically, once my MacBook gets back from repair, I will be installing 4 gigs of OWC RAM I ordered. From what I've researched, my MacBook has a maximum of 3.3 gigs of RAM, but I ordered the 4 gig pair anyway because it was only $100. Anyway, I hope I ordered reputable RAM. Feel free to share your input on OWC. And I'm just looking for the programs I should use to test it and make sure everything is just lovely. Also, do I have to do anything additional besides the physical install? I know with my old PC desktop I had to set the RAM's timings.