I just recently picked up a MacBook Pro, the $1199 model with a 250GB hard drive from Best Buy (Only reason - 24 months no interest with their store credit card). I would like to upgrade the hard drive, but need to know exactly what size screwdrivers to use. I was able to take out the 10 screws and unplug the SATA connector from the hard drive, but there are star screws that are on the actual hard drive I need to remove and put on the new one...Since I didn't have a star screwdriver, I had to put it back together. ONE screw will not go in all the way on the side, and its annoying me. Because of this, I'm scared to take it apart again without the proper tools and stripping a screw or hole. So if you don't want to read my rambling, my questions are: 1. What #/size philips head and star screwdriver should I use, and can I find there at a hardware store easily? 2. Would a hard drive from a Windows laptop work if I took it out, plugged it in my Mac, and used Disk Utility to format it first? 3. Has anyone else experienced screws that will not go in all the way after taking apart their MacBook Pro? Thanks for any answers in advance!