When you use the Wireless Network Setup Wizard in Windows XP to set an access point that does not use the WCN feature, you cannot connect to the wireless access point, and you may receive an error.
This problem occurs if your access point only accepts a WPA (Wi-Fi Protected Access) key between 8 and 63 characters. If you enter a WPA key that exceeds 63 characters it is not set, and you may receive an error.
To workaround this behavior, enter the WPA key manually. While running the Wireless Network Setup Wizard select the Manually assign a network key option on the Create a name for your wireless network page.
NOTE: When you select WPA as the encryption method, the wizard creates a 64 character hexadecimal key, which is supported by all WCN compatible devices.
When you finish with the Wireless Network Setup Wizard, print the configuration settings for use when setting up the access point.
NOTE: See Windows Connect Now Technology