After Vista PPC laptop sync no Windows 2000 desktop sync?

After syncing dell Axim(PPC 4.2) to Vista (Windows Mobile Device 6.1)
notebook no more sync with Windows 2000
desktop. On PPC connect, 4.5 activesync activates desktop and PPC but then
shuts down after less than 5 seconds and only activesync display is "no
partnership"? Tried the following:
1. restarting desktop
2. softbooting PPC
3. hardbooting PPC
4. uninstalling and reinstalling activesync
If this is partnership setup problem, I can't figure out to get to
partnership setup in windows 2000 (as I recall partnership settings are setup
through a sort of wizard at connection)?

It still syncs with Vista?

Any ideas?
--
RJ