You should be ableto get national waypoints from the Soaring Server
http://soaringweb.org/TP/HomePage.html or your national soaring
association. Put it in the same place as airspace and maps.
They (waypoint list's are in PDF or TEXT format so I still have to load
them all by hand and no file( I havn't figured that one out yet)to retain
them in.
BTW, you are backing up your XCSoar set-up to your PC, I assume? Do it
every time you change the set-up / add a new data file / define a new
task and you'll be streets ahead when your iPaq and/or SD card fails or
gets lost.
And keeping a hard copy just in case.
Ken