Unless your some important or busy business men(yeah, I said it), then don't waste the money. Home Premium offers plentyfor what most people need. Unless you're feeling spoiled, then don't bother with Ultimate edition.
No...
Windows Vista Ultimate is a premium operating system produced by the Microsoft Corporation. The term "Ultimate" describes the product as the most premium version of Windows Vista, it includes all additional features. Another example of "Windows Vista Ultimate" : Windows Vista Home Basic
Because it is ultimately created by Microsoft. The Ultimate edition has all the features of both Home Premium and Professional.
The largest edition of Microsoft's operating system Windows 7.
windows 7 ultimate
Yes, you will need to buy an upgrade copy of Ultimate Edition to do so, or use Windows Anytime Upgrade available from the Microsoft website. Contact Microsoft if you need to know whether you can use upgrade in-place as you will be able to keep all of your files and folders this way.
Microsoft Windows XP 64 Bit Edition ?
audio and video player developed by Microsoft and distributed with Microsoft windows
No.
You have to buy it, as it does not come automatically with any version of Windows.
Yes, it will.
Yes, you can.