Networking :: Network on Asus K8N mainboard

first of all, I'm a completly new user of DSL, but I already like it. But of course there are a few problems. Currently I'm testing it on an other PC.

Current Situation:
PC1, Win XP, Asus P4C800 mainboard with a wireless network card (shared through win XP standard settings) that shares the internet to the on-board card.

PC2, DSL on an 64MB USB stick. Asus K8N mainboard.

But it doesn's find a network card. How can i connect this PC on the network, or install a driver?

I already tried to boot this PC with an 3com 3C905 networkcard, but in won't boot

original here.