Hello, I have made a 'dummy' sound/midi driver based on the DDK miniport/portCls examples (msvad). Now I want to connect this driver to a USB device for which I already have a 'real' driver (which already has an ASIO interface). Is it possible to integrate these to drivers or do I need to have two drivers which both are seperatly installed and get a handle to the USB driver from the miniport/portCls driver? I installed the 'dummy' driver such that it is emumerated from the USB bus driver so I think it already is attached to the USB driver stack. Are there any examples on this issue? Regards, Bart ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/