I have a HP Pavilion dv6 1140ea. It is able to upgrade to Windows 7. I downloaded Windows 7 Upgrade Advisor Version 1.0 and all softwares were compatbile. Windows 7 Upgrade Advisor 2.0 was released, I got it. I did a scan if anything was compatible. In 4 programs it said 'Before Upgrading to Windows 7, we reccomend unistalling this program. It can safely reinstalled after the upgrade'. And I know that they will work on Windows 7. But other people don't bother reinstalling, they just upgrade simply, I don't want to reinstall the programs again as they are compatible with Windows 7. Even HP said that the software are compatible and you can upgrade just like that. I got two softwares that are ATI Catalyst Install Manager and Catalyst Control Centre, now I don't know were to download them off. Please could you help me, I don't want to reinstall the programs, do I have to reinstall it, even though it is recommened ?