Gears of War: Change the Language...?

HI @ all...

I got since a view Days the Game: Gears of War for PC...

How can I change the Language in the game.? (I would like to hear the
original Voice of Marcus and Dom. hehe.)

I got only the German language, is it possible to change it in to English.?
I read somewhere that the English Language is also on the DVD...

THX

--
bye, DUDI

PS: Sorry for my English... but I'am only from germany... :-)

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