Recently, i had deleted the files under installer folder of windows to clean up the space and that leads to one problem. All the icons of Microsoft Office was disappeared and i was not able to set the icon anyways.
But i had worked on changing the icon in past and helped me to setup the new icon for Microsoft office 2007 or any other application.
To set the icon perform following steps:
Go to Tools | Folder Option and select “File Types” tab.
Select the application, whose icon needs to be changed and click on “Advance“. one popup window will gets open.
In that select “Change Icon” option and select the icon which should be used by the operating system to represent that particular application.
I hope this trick will help lots of Windows XP users.