OK heres an update
On office server running windows XP, managed to get a connection and display pc screen briefly , but was totally unstable. Lost connection repeatedly. Only able to reconnect after rebooting ipad, but quickly lost connection again so complete fail
Moving to a home pc running windows 7 . Link works holds the connection and displays fine on the ipad, although resolution on PC drops considerably in duplicate monitor mode (changed via display link system tray icon, via advanced configuration) . In extended display mode, the normal resolution returns on the pc
Nett
I have a real use for this at work on XP network PC, but it doesnt work. Working on my standalone PC at home MAY be useful