Found a great link to show me HOW to upgrade the second hand Mac mini Oct 2009 release (http://www.macworld.com/article/1143684/macmini_upragade.html) but I have a few outstanding questions. 1) The Mac mini comes with 2GB RAM. It will support 4GB. I would like to upgrade to 4GB. Do I need to buy an additional 2GB RAM module or 2x 2GB RAM modules that are the same make etc? 2)Any suggestions on a 7200 rpm hard drive with maximum storage capacity for this model? I live in the UK. 3) Do I really need a drive enclosure to clone the current 160GB drive (nothing bus OS X installed) or can I insert the new drive and install OS X directly on to the drive with the software that came with the computer? 4) Do I really need an anti-static wrist band whilst performing the upgrade? Thanks for any and all help.