I have a Genius Sound Maker 3DJ, full-duplex, PnP, support iPhone, and a SM56 Motorola modem. I plug a microphone into the MIC jack of the sound card. Strange thing: when I say something into the microphone, here is the voice in the speaker(plug into the soundcard too), but cannot record anything! I have checked Control Panel/Multimedia, no strange thing, I can control the volume of the mic, it's enabled too. note: The modem has it own SPK and MIC holes, so I think it's a speakerphone one. What can I do? Any ideas would be most appreciated Chen Joe We are living dust! The PCBUILD web site always needs good submissions. If you would like to contribute to the website, send any hardware tech tips or hardware reviews to: [log in to unmask]