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[R Finger]

I ran ipconfig and it shows it connected. It has exactly the same information for the adapter as my laptop running XP SP3, which can connect to the internet.

[davidgw]

Are the IP addresses assigned statically or do they receive them from the router (i.e. from DHCP.)? The IP addresses need to be unique for each computer.

[R Finger]

I believe they receive them from the router, but not certain. Also, not sure how to determine that information. Open to suggestions.

[davidgw]

Click on the start menu, control panel, network connections (in classic view, or in category view, network and internet connections, then network connections), then the wireless connection. In the window that pops up, click on the properties button, then on the next window that pops up, click on internet protocol (TCP/IP), then click the properties button. In the next window, the two radio buttons that say obtain an IP address automatically and obtain DNS server address automatically, should be selected if the computer is receiving the IP address from the router. If the other option is selected, then the IP address is static.

The other way would be from the same IPconfig /all command as we used previously, and it will say DHCP enabled: yes.

[R Finger]

Followed your procedure on the desktop which has the disfunctional Wifi. Did the same on the XP laptop. The configuration on both is the same (ie. same setup). and the laptop works fine while the desktop is still unable to find the internet.

[davidgw]

When you run ipconfig /all on all three machines, are the ip addresses unique for each machine? (The first three octets can be the same, but the last one must be different: 192.168.0.x. The x value must be unique for each computer.) Also, is there anything else that has changed? i.e. a virus, or something else?

[davidgw]

Try this: go to control panel, click on internet options, then go to the connections tab, and at the bottom, click on the LAN settings button. In the window that pops up, if the use proxy server box is checked, uncheck it.

[R Finger]

It is unchecked. In the automatic connection section, automatically detect settings is checked.

[davidgw]

Is the firewall on? If it is, try turning it off.

[davidgw]

When you run ipconfig /all on all three machines, are the ip addresses unique for each machine? (The first three octets can be the same, but the last one must be different: 192.168.0.x. The x value must be unique for each computer.) Also, is there anything else that has changed? i.e. a virus, or something else?

Let's go back to this. Does the IP address start with 169?