I have just bought Logitech Z-5500 spekers. I also have a Club 3D Theatron Agrippa sound card (it supports DD and DTS). Everything works fine except the games. I can't get "true" surround sound in games. I can choose only between Digital Dolby ProLogic Music or Movie. I don't know how should I configure my settings in windows or sound card drivers to get surround sound working. Any ideas or suggestions?

Thanks for help!
Kind regards, Matic