Quick mic. problem

[miksanity]

Hey guys, when i talk in game my computer records all the backround noise i.e music, vent, and it all combines to make a screeching noise. When i record in sound recorder, it records the music playing and not my voice, but it theres no music it records my voice. It keeps recording the wrong stuff! any help?

XP
on board realtec HD (lol yea rIGHT hd)

 

[Darknova]

Get a sound card. My mic does NOT work at all on my onboard realtek sound. If i put the volume at above 50% it cuts out, and you can't hear anything but background noise at less than 50% lol.

I just stuck an old Soundblaster Live I had lying around in my PC and hooked up the mic to that. Worked perfectly