Upgrade from Win 7 Home Premium to Professional 64 bits

Hi all,

Just wondering if i need to do a clean install if upgrading from 64 bit Windows 7 Home Premium to Windows 7 Professional 64 bits? Or am i able to just upgrade? Will it affect the current softwares on my PC and do i need to reinstall them? Thanks all!

No install files needed.
Only the Upgrade key is need.
Anytime upgrade only adds-on the Programs & Features from version to version.
http://www.sevenforums.com/tutorials/95744-windows-anytime-upgrade-how.html

Thanks for response!

You are welcome.