Two main possibilities:
1. Not all files were installed correctly
2. Your firewall is preventing access to the PDA
The best first step would be to go to the 'Build Data For Pocket PC'
screen, and choose File/Identify Device.
If the device is found, try looking at it from Windows explorer - can
you see the folders?
If the device is not found, run AditMove directly (double click from
explorer on aditmove.exe in the aditsite folder)
and try to Identify the Device from there
Let me know what you find