dunno about the internet....
but for the sound have you tried going to Applications>sound and video> volume control
in volume control go to Edit>prefrences
in prefrences scroll down to Audigy Analog / Digital output jack.... check it
then click on the switches tab and check the Audigy Analog / Digital output jack box.....
hope that works
it worked for me...
I'll take a guess on the internet but I doubt that it'll work....
I have ethernet so what I did was go to Desktop>system settings>network and I activated which ever device would activate...
hope one of my suggestions helps