Don't know if applies to Office 2007 but here's one guess........

For Office 2002 and 2003............

Are you running TweakUI?

If so, you may have disabled the MRU lists by unchecking "maintain document
history list" under the Explorer tab.


Gord Dibben Excel MVP

On Tue, 13 May 2008 01:09:01 -0700, Mahboob Alam <Mahboob
wrote:

I have tried the Excel Options Menu and on to the sub-menu "Show this number
of Recent Documents" but it is not allowing any editing for changine "0" to
any number. Can any one help solve that problem? Thanks