Creative Audigy2 ZS card Problem

Hi. I have a Dell XPSGEN5 with an Intel® Pentium® D CPU 3.20GHz Dual Core with 1024MB RAM Running WinXP professional, through an nVidia GeForce 6800, 256mb PCI Express card. For some unknown reason, my headset microphone is incompatible with the Creative SB Audigy 2ZS [D8CO] sound card. I've tried everthing. Contacting Dell, adjusting mic input settings...the bottom line is I am barely audible online in programs such as TeamSpeak, etc.Could this be a driver issue? Do I need to reinstall the audio drivers? How do I go about doing that? Any advice is appreciated, as I am very frustrated, and Dell is dragging their feet on this one.Thanks,http://www.graphics-free.com/animations/tr...ges/plane_6.gifAlex ChristoffN562ZBaltimore, MD