I appears that Windows Office Professional 2007 will not work with Windows 7 Ultimate 64 bit. When I installed 2007 ultimate, none of the Office Pro 2007 applications (Work, Excel, Powerpoint, etc.) loaded or if it did, I couldn't find it. My first thought was that the Windows 7 64 bit would not accept office 2007 professional. These applications are being loaded on an Aspire One netbook.