HTC Shift Windows XP TPC Installation from scratch:

Before you start:
Think first about to open the Windows Mobile side like described in HTC forum. There is a good description
“howto” do this within windows Vista.

Before you install:
– enable WLAN und Bluetooth in Vista side (if you can). (not really necessary, but maybe easier later)
– Disable USB Tool (cable in) on Windows Mobile side if you have the “opened” Windows Mobile installed
– remove SD memory Card if inserted
– Insert the HTC USB Hub with integrated Network card

Read more here.