Run the Microsoft Windows Installer Cleanup Utility (google that) and then try again.
I have a Hp Laptop XE3 and recently upgraded WIN98 to WIN XP. After I download the software for the Hp Scan jet 2200c ( which worked perfectly before) and try to install the software; I get the following message"class installer has denied the request to install or upgrade this deviice". What should I do. Please help.