Greetings everyone! Probably you wont answer to my problem after you read the product concerning my problem.... I recently bought a c-media 8738 sound card to replace the integrated via97 audio from an old computer just to use with logitech 640 5.1 speakers. The box reads 4ch/6ch, I instaled everything properly (card, drivers, audio plugs) but NO sound comes out from the rear speakers..... I have win xp audio settings on 5.1 speakers.... Some one told me that chipset requieres special software to enable 6ch.... I'm I missing something?..... Is there somehting else I should know/do? Please help!