out of the blue an icon popped up in task saying something to effect 'new device is available on network" icon for D-Link wirreless router now appears in My Network Places folder. I right clicked, saw 'invoke as an option, and after finding no meanigful references in MS help I 'invoked it. Then I went to D Link site again. after run/ipconfig to verify IP I pinged, test OK, verified UPnP was enabled, then rebooted D Link. LW still gets error msg[not net connection].

the latest: in add/remove programs>components>Networking, I verified UPnP was checked and went ahead and checked peer to peer[don't know if it applies],
Also redid XP firewall: UPnP framework>Edit>all PCs[incl internet]. per XP help article below: [LW still won't boot/connect so I will try PC reboot:-)

To enable UPnP network functionality
Windows Firewall is turned on by default in Windows XP, which can help provide security for your computer. Consequently, the firewall blocks ports 1900 and 2869—the ports that the UPnP framework in Windows requires for network communication. Follow this procedure to open those ports.
You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings might also prevent you from completing this procedure.

1. Open Windows Firewall.
2. On the General tab, click On (recommended). (If the Don’t allow exceptions check box is selected, the UPnP ports remain closed even if you complete the rest of the steps in this procedure.)
3. Click the Exceptions tab.
4. Select the UPnP framework check box, and then click OK.

Notes

• To open Windows Firewall, click Start, point to Settings, click Control Panel, and then double-click Windows Firewall.
• By default, this procedure sets up ports 1900 and 2869 to accept connections from your home or small office network only. To receive connections from all Internet Protocol (IP) addresses, select the UPnP framework check box, and then click Edit.
• When ports 1900 and 2869 are blocked, UPnP messages are not sent over the network. Therefore, a UPnP control point program, such as Internet Gateway Device Discovery and Control Client, will not be able to discover or control UPnP devices attached to the network. Also, you will not see changes in the status of networked UPnP-certified devices (for example, when a device's power status changes from off to on), because Windows Firewall blocks incoming event messages.