I am a ghostaholic....On my main computer...I save all my stuff on a fat 32 partiotion...and have copies of the registry and the start menus for all my OS....So that I can switch from win98-xp and still have access to all my files...I usully make a ghost every 3 months...
and also have all of the OS as clean installs...and by savind a copy of the registry for all ...allows me to easily edit them...and then put a fresh...install then migrate the registry...and also have all my dll's in folders labeled win9x,win Me, NT, 2k, XP, and Emb(windows embeded).