Wow!Dying breed we at the FU3 forum... :( In general I never changed any cfg parameters since day 1 (when FU3 was brand new from the box). I just transfered it form HD to HD as time passed and upgrades made. I even have a backup copy of the folder as it is on DVD and copy it to HD as and when needed. The only change I have in the scenery cfg is to enable the scenery to be read form the HD.Pieter