> This will probably work as you expect it to if you either > 1) delete the device from device manager before "reinstalling", or > 2) increment the version number in the inf before "upgrading" I never make an "upgrading" of the driver in my tests. I used DevCon to uninstall it and then deleted inf/pnf file from windows\inf directory. Then I installed it again, not changing anything in my inf file. Is it enough to completely remove and reinstall the driver? Now I did as you recommended, and see no my custom names at all, only "Microphone" and "Line In". BTW, how Vista compares the GUIDs from MediaCategories? Is the comparison case-sensitive? If yes, how to form a correct GUID? I see some GUIDs are uppercase but some have lowercase letters in Data3. And does Vista a kind of "caching" the names got from MediaCategories list? Regards, Eugene ****************** 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/