If you’re looking to purchase a new computer with Microsoft Vista, make sure you also get the downgrade license to Windows XP. What does this mean? This means if you 
don’t like Vista, you can easily downgrade, or install, XP. The “easy” part means that your computer will also contain an operating system CD that includes Windows XP with all of the hardware device drivers. The key point to take from this is that the downgrade license includes the drivers. Without the drivers, you might find yourself looking all over the Internet for the relevant XP drivers. This could take a certified Windows expert 3-4 hours and take the layperson 7-10 hours. Whether you think Vista is for you or not, it is in your best interest to get the downgrade version. Many times, this added version is free or a few extra bucks.
This downgrade license is available for a reason. There have been continued complaints from Vista users and in order to accomodate the public, manufacturers are offering this XP Operating System CD along with Vista to provide an option for any future Vista complainer or unhappy camper. Make sure you protect yourself and get this downgrade option also.