I have a X5, 300MHz and recently purchased a Dell truemobile 1180 CF card. I can connect when in the cradle, but once i remove it from the cradle I get the "The page you are looking for cannot be found" error message.
Why do i get this message and how can i fix the problem? Im new to this so please give me the dummy version please.

Making a web connection while in the cradle uses the ActiveSync passthrough feature and has nothing to do with wireless.

You'll need to find out if your device is getting a valid IP with the wireless card. The best tool for this is vxUtil.

There are links to its download and many other suggestions that you'll find helpful in the WiFi Guide linked from my signature. In particular, check out the Troubleshooting section.

-Ike-