Revan Foly wrote: > > I think I will first of all try the WinMM User-Mode Driver approach to > understand the general driver concept better. I saw that there is a > User-Mode Driver Framework (UMDF) in the new WDK 8.0. Can I use that > or will I have to create the driver from scratch? No, UMDF is an entirely different beast. That's essentially a mechanism that lets you write user-mode drivers that impersonate kernel-mode drivers. I'll drop you a private note shortly. -- Tim Roberts, timr@xxxxxxxxx Providenza & Boekelheide, Inc.