Hi Judy,
Without a support contract, your license file was extended, but the version number (2008.120) remained the same - which means that you will have to remain on the old version of PADS (and Windows XP - because those old versions of PADS were released before Windows 7).
A license with an extended expiry date is on Supportnet - under the My Licenses tab. You should be able to access them even without a support contract.
Regards,
David