Mic Question

Okay ive got this mic, and use it on my pc

http://www.gamestop.com/Catalog/ProductDetails.aspx?product_id=25803

and i was wondering is there a way to make it so only voice comes out of the speaker and not game sounds?
if so, could some one give me a quick walkthrough.

-Thank You

(sorry dont know how to make it a link)

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