i am booting knoppix 3.2...................everything goes well except there is not internet and sound..................

i have 2 network cards....1 is onboard VIA and the other is realtek PCI
so i went to the kde menu and clicked
knoppic -> network configuration -> network confifuration

2 network card popped up............ eth0, eth1.........i know one of them is my realtek just dont know which one....................so i entered my IP, subnet, DNS................but had no idea what my broadcast address is..........i entered the same info for both cards......none worked.........

here are my questions:
1) how do I find out which device (eth0, or eth1) is the realtek card?
2) how do i find out what my broadcast address is?

then there is the sound problem............
i read the previous posts.................but didnt find an anwser........

i have a SB live! value..................knippix detects the card upon booting from the cd room.......................but there is no sound when i tried playing some song in XMM...........the sound I/O is set on auto detect.......

i also did the sound configuration thing from the knoppix menu.........
the detection result was "5885 audioPCI card".......then it tried playin some sample file but i didnt hear a thing...............so i went to manual ............picked SB live........cant hear the sample still............picked SB AMU??...............no sound still..............

the system info from the kde menu tells me there is no info for the soundcard.................................so how do i fix this................?

thanks in advance......................