[Inkscape-user] Pressure sensitivity using Tablet Laptop

Dear Group,

I have installed the latest Inkscape (0.46) onto my tablet laptop "Lenovo X61 Tablet" under Vista SP1. I try to use the pressure sensitive features of the pen, but Inkscape does not show the tablet/pen under the external input devices (of course not, it is internal). Does anyone know a trick how I can trigger Inkscape to recognize the pressure sensitivity of the pen? (First I thought that the pen was not pressure sensitive, but using the M$ Office "Ink Annotations"-tool, it is).

Thanks a lot for your help! Manuel