are you trying to do this via Bluetooth using JavaMO?
I use the Window CE.Net version over Wifi
on the front page of the LMCE admin page click on the 'Download Orbiter, Utilities and other software' link.
download the version that is right for you from the list:
Processor Operating system
Intel/AMD x86 (normal) Windows 98/ME/XP (Download)
XScale Windows CE.NET (Download)
Intel x86 Windows CE.NET (Download)
Import Outlook Contacts Windows 98/ME/XP (Download)
Outlook sync utility Windows XP (download)
Pluto Backup & Share (see Wiki help) Windows XP (download)
Pluto Switcher Windows XP (download)
either the Xscale windows CE.Net or the Intel x86 Windows CE.NET version, I can't remember which, I would have to look up the processor. transfer it to your device (or download direct to the device) and the run it. with the XDAIIi version it tells you it is for the wrong version of Windows CE but works anyway. try it