No offense but the question answers its self....
upgrade XP Proffesional to Windows 7
with
Windows 7 home premium to Windows 7 professional upgrade
the disk upgrades Windows 7 to a better version, and as such has nothing to do with windows xp
It offers more business features which are great to have if you have any financing or business transactions you do.
Windows XP Professional is an upgrade to Windows 2000 Professional. Windows Server 2003 is an upgrade to Windows 2000 Server.
No. Windows XP is a downgrade.
Yes, you can. As far as you already have OS of older generation installed you can run the upgrade DVD.
yes you could
No.
Not directly. You can format the hard drive and install Windows XP cleanly. You can upgrade directly to Windows XP Professional (which is more expensive).
no. it is an operating system. there are three versions of Windows 7. Windows 7 Home Premium, $199.99 ERP Full Version and $119.00 ERP for Upgrade. Professional, $299.99 ERP Full Version and $199.99ERP Upgrade. Ultimate $319.99 ERP Full Version and $219.99 ERP Upgrade.
If you are not a computer guru,its best to have a professional upgrade this feature for you.
Ultimate is a larger edition than Professional. If you want to downgrade you will need to buy Professional and do a clean install.
It should be, even if you buy upgrade you can still use previous version. The only thins is if the upgrade had its own key. If it has one, then you can use Professional without any problem. If it does not have its own key, then you cannot use it in the same time even on different PCs.
Windows Vista