Hmm.. when I install my VAD device, on Vista and Win7 its status is disabled, which means you can't see it in the sound control panel, unless you check "Show Disabled Devices" The VAD is based on the MSVAD example, any ideas what might cause this ? On XP in seems to install non-disabled... TIA /Rob ****************** 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.com/