network(LAN) card driver problem for inspiron 600m

Hi, all.

Recently I upgraded new hard drive and installed operation system and several drivers after downloading them from dell website.

Everything is okay except Broadcom network card(LAN).

Whenever I turn on laptop, I get the message that new hardware(ethernet controller) is found. So, I tried to install dirver for nework card.

But, each time I get the message that driver was not installed completely.

What I should do to resolve this problem?

Also I installed chipset drivers and upgraded bios.