Upgrading your computer to Windows 7 will enable moderm software and hardware to run much more effectively. Also it is much better than Windows Vista in most people's opinion.

Your computer will need to be powerful enough and modern enough to run the new operating system. If it runs Vista then you are fine for Windows 7. The actual upgrade process is usually pretty simple and relatively flawless - but ALWAYS BACKUP FIRST.

Microsoft have a handy automatic tool that assesses your computer before you buy: Windows 7 Upgrade Advisor