How can I recover the 1280x1024 display resolution I had in Ubuntu v11.04?

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http://askubuntu.com – I have a Compaq 5645LA computer. When I was using Ubuntu v11.04 with Nvidia 96 propietary drivers, my Compaq FS740 CRT display resolution was 1280 x 1024 pixels. Today I upgrade to Ubuntu v11.10. After actualization my screen resolution was the same with Ubuntu default drivers, but after installing Nvidia v96 and Nvidia v96-updates propietary drivers to get better performance, the highest resolution available was 1024x768. I uninstall Nvidia controllers to use Ubuntu default drivers, but I cannot get the 1280 x 1024 resolution anymore. (HowTos)