Did you tried to use a T-Mobile web’n’walk ExpressCard IV onto Windows 7 via the on-stick supplied web’and’walk (w’n’w) manager?
Yeah, that shouldn’t be possible, right? –> http://www.t-mobile.de/kompatibilitaet/0,22763,23727-_,00.html
I discussed the issue with the T-Mobile support and one of the support specialists gave me the ‘right’ answer: Download the Software for the Telekom web’n’walk Stick Fusion III and you will be fine!!! –> win_installer_22_001_18_09_55.zip