Here: My soundcard doesnt work anyways...so I may as well put my information to good use. Go into Control Panel from the Start Menu. (It will be in Classic View, if it is in Category view, look at the left side panel to change it!) Go to 'System' then the Harware tab. Click 'Device Manager' and click 'Sound, Video and game controllers' find 'C-Media AC97 Audio Device' and at the top, the eighth button from the left should be 'Update Driver' click that.
After that, click 'Yes, this time only.' Do the recommended action to update it. Also find the properties of the C-Media device to find out exactly how old that thing is! If 2006 or older, it HAS to be updated ASAP.
Sylvie