Outlook Search - Subfolder Setting

[Kerry]

I am running Microsoft Office 2007 and I have noticed that when I do a
find on an email to find all related messages, it performs the search and
returns back the correct results but when I try to adjust the settings in the
folders that it is looking in and uncheck the Search Subfolders option it
doesn't
remembermy new settings. Once I initiate another search it goes back to
its original settings. Is there a way to set these changes permanently?

Thanks in advance
K