Vista - No audio devices are installed in recording

Hello,

I have a big problem. I usually use the microphone that is bulit into my computer but i wnated to use my headset for better quality. It didn't work so I tried some things to make it work. I went into control panel and under sound to see if I could change anything in recording. Recording showed that I have one microphone installed "realtek". After I figured out i can't change the realtek microphone into my headset microphone I closed the tab and could literally see how the "realtek" microphone disapeard out of the recording box. Does anyone know how to get it back?? I really need my microphone!!! My playback is still working.

Thanks a lot and please excuse my poor English, I'm from Germany.

alright i got it back!!! I'm pretty proud right now!!!