The techs at
http://www.odysseyinc.com/ came up with a solution:
Download and install only to your desktop netonschedoemsetup.exe from
http://www.odysseyinc.com/Subpages/Downloads/On-Schedule/index.htm
Uninstall the Pocket On-Schedule from your SIMpad that is presently on it.
On your desktop PC, go to
C:\Program Files\Microsoft ActiveSync\Pocket On-Schedule
Copy the h2kOnsched.WCE400_ARMV4.CAB and paste onto your mobile device.
Then tap on the file to start the installation.
Then in Microsoft Outlook you should be able to set up a folder to sync and sync successfully. It also will allow you to sync from within Active Sync also, although I have not tried that yet.
Can't vouch for this working on anything other than the SIMpad SL4.
Hope this helps someone.