P6 and Windows Vista and 7

 Below discussion was previously incorrectly posted to Community Documents: -
 

February 1, 2011 11:25 PM by User112486

If you have to install or re-install P6 on a computer with a Windows Vista or 7 operating system, you may notice that you will not be able to properly edit and format some fields - such as headers and footers, notebook items, etc.

In its infinite wisdom, MS removed the dhtmled.ocx file that made the editing and formatting possible in XP. 

Here's a little information about the issue:

http://msdn.microsoft.com/en-us/library/aa663363.aspx

The quick fix is to go to the MS page and download the file that will fix the issue.