There seems to be something wrong with the sound/soundcard on my computer. Everytime I talk using an application such as Ventrilo, I hear myself in my headset, and I can hear the slightest noises in the headset too. For example, everytime I type or move my keyboard, I can hear the sound amplified in my headset. Is this a headset problem or soundcard problem, or will some software tweaks fix the problem?