Hi, I was trying to install a Mad Dog Prowler 4.1 sound card on a soyo k7vme mobo. (i am running XP HOME)

I disabled the onboard sound card in bios and also in the safe mode, I delete all the things in the cataglory of "sound video and game controller" in device manager. then i plug in the sound card and install the driver for the new sound.

It work fine if i only play mp3 with winamp. All front and rear speak have sound. but when I try to play some MPEG file or DVD, the sound became very very low, especially the rear speaker. I tried a lot of things, like change the output setting for the sound card or update the driver, but all useless.

Can anybody help me?