Pocket PC ActiveSync 3.5 via RAS Server

Using an IPAQ Pocket PC 2002 I am dialing into a RAS Server and trying to reach back down the LAN to a Windows 2000 PC running ActiveSync 3.5
I have verified that I have established an IP connection as I can ping the device address from the PC, also I can surf on the Pocket PC via our proxy. I have even entered static WINS entries but cannot establish a sync session. ActiveSync via USB cradle is functioning and system is set to listen on LAN. Our address scheme is 192.168.1.x not 192.168.55.x as referred in some documentation (does this matter) Is there a restriction on this type of connection or do I have to use the forthcoming Mobile Information Server (beta). I would appreciate any ideas on how to make this work. Thank you.