Hello,
I recently got an Inspiron 1520 with a Broadcom 440x 10/100 network card, running XP. However, I can't access the internet through my cable internet provider. I've verified that all my drivers are current, I've made sure the wireless internet was turned off, and I've checked all of my TCP/IP settings and I'm pretty confident that they are as they should be. I've also reset the TCP/IP settings, according to the wizard from this website. Here's the ipconfig/all:

Windows IP Configuration

Host Name...................:Tovarishcha
Primary DNS Suffix..........:
Node Type...................:Hybrid
IP Routing Enabled..........:No
WINS Proxy Enabled..........:No

Ethernet Local Area Connection

Connection-Specific DNS Suffix..:
Description.....................: Broadcom 440x 10/100 Integrated Controller
Physical Address................: 00-1C-23-99-47-DD
DHCP Enabled....................: Yes
Autoconfiguration Enabled.......: Yes
IP Address......................: 0.0.0.0
Subnet Mask.....................: 0.0.0.0
Default Gateway.................:
DHCP Server.....................: 255.255.255.255

There's also an interesting wrinkle: If I connect the ethernet cable without turning on the cable modem, I can establish a connection with the DHCP server, acquire an IP address, etc. The setup program for my cable provider can also connect to the server, but it can't ping it. But I can ping the DHCP server myself using the ping command. Now, if I turn the cable modem on, I have limited connectivity, and can't acquire a server address. It's very perplexing to me, and very frustrating also, since I only got this computer two days ago. I would certainly appreciate any help anyone can give me.