Hello I have just started working on WDM audio drivers. I am referring to the MSVAD sample driver which comes with the DDK. I used the devcon utility to install this driver (on a Win7 VMWare Virtual Machine): *devcon install msvad.inf *MSVADSimple* ** *Initially I got the error of missing cat file. On commenting out this dependancy from inf file, I get yet another error of missing vaddyn.sys file.* *This sys file was not generated when I built the entire MSVAD solution.* ** *Is there any step which I am missing out here? Any modification to be done in inf to get this driver installed on my VM ?* ** *Additionally I would like to capture traces for audioeng.dll,audiokse.dll and portcl.sys. This would help me in understanding the call flow from the audio engine upto the sample miniport.* *Which setting I need to do in order to achieve this.* ** ** *BR* *Rashee* ** **