IP Passthrough on Nokia E61/WinXP

First download and install 'Nokia Network Bridge' from here

Now when you select 'Ip Passthrough' (when the usb cable is plugged in), the drivers will be automatically installed.

On the E61, create an access point with 'Data bearer' = 'IP Passthrough'.
i.e. Connection Name : My Ip passthrough
Data bearer : Ip Passthrough
Homepage : None

The 'Network Bridge' icon appears in the Control Panel, open it and enable the E61 checkbox.

Try to surf/connect and select 'My ip passthrough' as the access point.

Thats it.