I have an Acer M5640 desktop. I want to upgrade (32 bit) to Windows 7.The Windows 7 Upgrade advisor tells me that I have a program named ATI Catalyst Install Manager that should be uninstalled before the upgrade and then installed again after the upgrade. I'm confused about this software since my display adapter is a Nvidia geforce 7100/nforce 630i and I don't see any ATI hardware. I'm not an expert in this area by any means. Google searches for the last 2 hours haven't helped much either. Can someone shed some light on this problem??? This is the only thing holding me back from doing the upgrade.