Upgrading Windows 7 Home Premium to Ultimate?

I got a notebook with windows home premium installed. I own a copy of Ultimate. Can I upgrade the Home Premium to Ultimate? And can I do it in away that I don't have to reinstall the apps already on my notebook?
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You can use Windows Anytime Upgrade to upgrade from one 32-bit version of Windows 7 to another OR from one 64-bit version of Windows 7 to another, but you can’t upgrade from a 32-bit version of Windows 7 to a 64-bit version of Windows 7 or vice versa.

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Normally, the upgrade is done by entering the upgrade key in the Windows Anytime Upgrade software which is included in your Home edition, however, I've tried to upgrade using the CD, but every time it says you have to do it using the mentioned software.

Try to boot from the cd and click upgrade, if it did't work, I believe that you have to install a fresh version.
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If you have Ultimate, place it in the CD Rom and restart the computer.  You may have to go into BIOS to change the boot priority, but when the Windows installer begins it'll give you an option of upgrading or a clean install.
PowerEdgeTechIT ConsultantCommented:
Go to Start, All Programs, Windows Anytime Upgrade.  You simply enter the product key for Ultimate, wait a few minutes, then reboot, and voila' ... you're running Ultimate, with all your files and programs intact.  I've done this dozens of times with NO problems.  The easiest way to upgrade by far.
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