Is your wireless AP connected to a router or to another computer using windows ICS?
I had similar problems with my wireless setup using desktop windows XP ICS, the DWL-1000AP and an IPAQ 3635 running PPC 2002.
My problem was that my IPAQ couldn't resolve any dns names to webpages... Basically it couldn't find
www.cisco.com by just typing it in. It could find it when I typed in the IP of
www.cisco.com (198.133.219.35).
Try the following, one step at a time until your problem is resolved.
First, go into your connections settings on the ipaq (start -> settings -> connections -> connections) Make sure "My netowrk card connects to:" is set to Internet Settings (you will need to switch it back to "work" to wirelessly sync with your desktop). Make sure your desktop/laptop can get onto the net, then try and surf with the IPAQ. Does it work?
Second, pick a popular site (
www.cisco.com was my choice) and ping it. Make sure your desktop is online and then on your desktop click start -> run then type "command" and press enter. When you get the dos like command screen type "nslookup xxxxxxx" where xxxxxxx is the website name (
www.cisco.com). This will return the IP address that xxxxxx points to (
www.cisco.com = 198.133.219.25). Now enter that IP address into the navagation bar of your IPAQ and press the go button. Does that work? If yes try the next thing.
Third, make sure your IPAQ is getting out to the net. This may require you to define the gateway IP, and the DNS server. Back on your desktop (still online) in the same command dos like thing from the above step type "ipconfig -all". Locate the DNS server name. Go back to your IPAQ. Click start -> settings -> connections -> newtwork adapters and then select your adapter. On one of the tabs is a place to enter the DNS server. Make sure that is correctly entered. Also, make sure you have entered the proper gateway (the IP of your ICS machine or of the router).
Hope that helps.