I've recently switched to Vista due to the new system build and apparently many people are having a similar problem as I do. I can't use my mic - the "Microphone" input in Vista is checked but there is no jack information. The other "Microphone" device with the jack information is grayed out. The card I'm using is Asus Xonar DX and I'm plugging the mic into the only input jack it has. I played with the Asus software a bit, and in the mixer options I have the mic checked. I have the latest Asus drivers installed for the soundcard.
