Windows Vista Upgrade Advisor is an application that will analyze your computer to check if you meet the prerequisites to update your operating system to Windows Vista. If you want to update your operating system it is advisable to check if your system is prepared for the new version, because if you don't you may change the operating system just to find out that it doesn't work.
Find out if your PC can cope with Windows Vista
When you install Windows Vista Upgrade Advisor it will perform an analysis to study the different components that form the computer and check if the Windows Vista operating system will work properly on it. Once it has finished, it will indicate if you can install Windows Vista. If not, Windows Vista Upgrade Advisor will indicate to you in which aspects your computer doesn't fulfill the requirements, and what elements or features would be necessary to be able to use Windows Vista on your system.
Don't risk updating your operating system without knowing for sure if your computer meets all the requisites to do so. Use Windows Vista Upgrade Advisor and check it out.