Normally the Palm Desktop unistall or even the Windows unistaller will leave "user" create files and their paths intact. Also, they will leave the reference to the file type in the Windows Registry. So if you want them deleted you will have to do it manually.
I'll take it another step further: if you backup your computer regularly (as I do nightly) and you do a restore or a restore to a newly imaged hard drive - if you backup your user profile off of the
C:\documents and settings\user\application data
Then Windows will also recapture the default path. The normal path is as thingdriver pointed out:
C:\program files\palm\(abbreviated version of your username)\backup etc
However, I've been "moving" my old Palm data since 1996 and my path is the same as above except instead of my user name it's "SR". This was always the default path with the early Palm devices unless you actually created a second user, which will have it's unique username. I don't recall what SR stands for but when beta testing - the techs always had us go to this SR folder on are Windows 95 machines.....
I would like to clear one thing and I'm being anal retentive but because I still use the old DOS commands from time to time the path is actually noted as;
C:\program files\ the character of / is incorrect.