SoundMax problems

Hey guys, Im trying to install analog drivers for Vista Ultimate. Ive been following the instructions on this page but if i uninstall the driver/device it automatically installs. But one time it didnt and now i cant find my device in a list in order to install the driver for it
Also if i try and install the digital drivers over the HD ones without uninstalling it says the device cannot start
Hmm, not really sure of that, i have a PN5NSLI Mobo from Asus but in my manual it says ADI AD1986A SoundMAX 6-channel CODEC.
Now im getting sound out of my left speaker and my sub but the right isnt working