ahmedatiya,

Thank you for using the Dell Community Forum.

This issue is resolved by update 946691 for the 2007 Office system. Update 946691 is provided to resolve the problem that you may experience when you install the 2007 Microsoft Office suite Service Pack 1. You must install update 946691 on you computer before you install 2007 Microsoft Office suite SP1.

The following file is available for download from the Microsoft Download Center:

Microsoft Update Download

Thank you for your help but now I uninstall microsoft office from my computer and when I tried to reinstall it again the installation stops suddenly and an error saying microsoft office 2007 encountered an error during setup appear

any help please,

thanks in advance