Hi all. My dear old intel Tiger iMac is my first Mac and it's been a love affair. Such a beautiful machine and it's never failed. However I think it may be just time for me to finally move on from Tiger? I intend to do a 'clean install', what are the precautionary steps I need to take? I have a OWC Mercury ext. drive-- is making a copy with Carbon Copy Cloner all I need to do? (does this save my applications-- i.e. photoshop, or will I have to reinstall them?) Do I need to 'wipe' my iMac harddrive or will that be taken care of in the SL install process? Sorry for the noob questions!