I have installed the Active Sync 3.8 on the server, and enabled PDA sync in the policy. (Win 2k SP4, PS4a - Published Desktop, running on VMware GSX) The phone I have uses Microsoft Mobile 5 (QTEK 8310), and does not plug and play the USB driver, even with Active Sync 3.8 installed on the client. Since the Citrix document states you should upgrade the client to the latest Active Sync version to get the latest device driver for performance reasons, i did install Active Sync 4 on the client. When i do this the PDA is recognised, and the driver is installed locally as "Windows Mobile-based Device". This is not connected trough to the PS4 server. Im stuck on this one, can it be that Windows Mobile 5 needs Active Sync 4 to connect to the phone, and the Citrix Client dont recognise the device? Is there any other drivers out there i rather should use for this device? I have no trouble getting it to work locally on any desktops. Mvh Svein Arild