I'm trying to install some GeForce drivers from 2008/9 for my 8500 GT, because newer drivers are pretty buggy with some interlaced resolutions I'm creating for my CRT. Getting "drivers are not digitally signed" error, even when I'm running in Test Mode. This is all happening with the Device Manager "have disk" install method. I'm wondering if the format for "digitally signing" has changed significantly since 2009 and that's why I can't install them. Any help is appreciated.