I've just ordered 4GB Ram upgrade of my 2.2GHz Santa Rosa MBP and I thought at the same time i should possibly look at upgrading the HDD to a faster 7200RPM drive? I'm sure the extra RM and faster HDD will make a noticeably difference in speed. One question, will a 7200RPM HDD not create too much heat for the MBP? I don't get heat issues currently and my dad welded an aluminium stand to raise it off of my desk to help dissipate heat. Will the drive new drive be ok?? Anyone else done this who can give advice?