Ethernet card probs

I have a: 3com fast therlink XL NIC (3c905B-TX) network card when I go to install the 3c509 or 3com EtherlinkIII 3c509 ISA ethernet card I get this error: /lib/modules.2.0.36/net/3c509.o: init_module: device or resource busy Installation failed. what should I do, why am I getting this error?

first install...help on a LAN from floppies

I'm on a network here at schoolit is a tcp/ip network What should I put for the domain name? Does it matter? The network gives me the IP adress (DHCP server) how do I configure when it asks..."what is the IP address of the sustem debian?" What should I put for the netmask last bits set to one