Great idea ebob2k
One thing though,
Backing up the Userdata folder only saves the Cardfiles and the Calendar and expense files
BUT the label, envelope,Phone fields formats,
(sklayout.skw,skwlb2.skw,skwnv2.skw and skwph2.skw) and a few others are in the data folder
and the Templates(Quickletters) are in the Sidekick98|Templates folder.
Check out the relevant FAQ's at Starfish's website for the locations etc.
Regards Jim