Both laptops connected, one can't access internet

[tbowen]

We have two laptops in my house. Mine is a newer (3-4 years old) HP running Vista Home. The other, my roommate's, is a much older Lenovo running XP. Just recently we switched our internet provider to AT&T. AT&T provides their own modem/router. My laptop (Vista) is connected to the wireless signal with excellent strength and I have no trouble browsing the internet. My roommate's laptop is connected with excellent signal, but is unable to browse the internet. I've tried disabling the firewall, disabling AV, nothing. I am at a loss and need to get it fixed since he is paying for half the bill. I am looking for any help I can get. Here are the current internet settings for the two computers.

Working laptop:
IP Address: 192.168.1.70(Preferred) I put "preferred" because that's what it said
Subnet: 255.255.255.0
Default Gateway: 192.168.1.254
DNS: 192.168.1.254

Non-working laptop:
IP Address: 192.168.1.150
Subnet: 255.255.255.0
Default Gateway: 192.168.1.1
DNS: 68.87.68.166
68.87.74.166

[LochLomonder]

Go to Control Panel and double-click on Network Connections. Right-click on the connection in question and choose Properties.

Under the General tab, click on Internet Protocol (TCP/IP) and choose Properties. Under the General tab from there, the radio buttons should be chosen for Obtain and IP address automatically and Obtain DNS server address automatically.

The Default Gateway and DNS entries in his don't match yours, so that's definitely the place to start.

[tbowen]

Go to Control Panel and double-click on Network Connections. Right-click on the connection in question and choose Properties.

Under the General tab, click on Internet Protocol (TCP/IP) and choose Properties. Under the General tab from there, the radio buttons should be chosen for Obtain and IP address automatically and Obtain DNS server address automatically.

The Default Gateway and DNS entries in his don't match yours, so that's definitely the place to start.

WOW! That worked like a charm. I can't thank you enough. Just to clarify, I did what you asked, then went back to Firefox and tried a couple different pages and they loaded just fine. So, everything should be good to go now, right? I don't need to check anything else? I just knew this was going to be a long, drawn-out, frustrating process but you proved me wrong! Thanks again.

[LochLomonder]

You're welcome

So, everything should be good to go now, right?

Yes, you're good to go. I've found sometimes what I think will be the simplest job turns into the hardest and, conversely, with the hard jobs. I'm glad this was an easy one for you.