Using HP Pavilion zt1145 with Windows XP SP2  Installed software and hardware fine.  notebook shows connected to modem, but Wireless Network Connection shows statement "Windows was unable to find a certificate to lon on to the network Centurylink 8150."  Also statement "Validating Identity"

I have never run into this before.  Centurylink 8150 is my network DSL Modem.

Any help will be appreciated