So after I ordered them I saw that Windows 7 is not under the compatibility list for the sound card. I know I should have looked at that before, but I don't understand why they wouldn't be compatible with Windows 7. Or have they updated them now to work with Windows 7? Is there any other way of getting them to work with surround sound? My graphics card (AMD 6870) says it supports 7.1 surround sound, but it's through HDMI.