Hi people, I have read up on everything regarding replacing a MBP hard drive and instead of wasting £80/$160 on getting someone else to do it, I'm confident to do the swap myself. I'll be swapping out the basic stock 160GB 5400RPM Hitatchi drive and replacing it with a brand new WD Scorpio 250GB 5400RPM drive (eBuyer @ £90). The questions I have are: 1. Will the replacement void my warranty IF I replace the original drive back into the computer should anything go wrong? Would Apple know I've been in there? 2. I'll be doing the switch on a brand new MBP (2.4GHZ Stock) next week so Leopard will be pre-installed on the internal drive awaiting setup. Should I go through the set-up process on the MBP first and then swap the drives or does it not really matter what I do? I'm under the impression that when I've put the new drive in, the computer will ask me to put the installation CD/DVD in and it will install OS X as normal from that point provided I 'erase' the drive from the menu bar at installation. Please tell me I'm on the right track! Any words of wisdom are appreciated and I have searched the forums for these specific questions as I obviously won't need anything like Carbon Copy Cloner or anything as it is brand new.