Access 'Sounds and Audio Devices'
menu through your systems 'Control Panel'
and select the 'Audio'
In the box labelled 'Sound Playback'
there will be a drop menu where it allows you to select the device used to playback sound.
Make sure that you have the correct device selected (which in your case will be the internal sound card and will most likely be the only option there seeing as you stated that you have no audio devices connected) and then use the 'Volume'
buttons located bellow the drop menu to further adjust your audio prefrences to your liking.
You can follow the same steps in the 'Voice' tab also located in the 'Sounds and Audio Devices'
Edited by mike b, 17 October 2007 - 01:59 PM.