Hi
The user can enter txtfrdate and txttodate
The user can enter txtfrdate only
The user can enter txttodate only
The user need not enter on both..
So the way to go is..
In the Forms Init event..
ThisForm.txtfrdate.Value = DATE()
ThisForm.txttodate.Value = DATE()
In the LostFocus of
ThisForm.txtfrdate
IF ThisForm.txtfrdate.Value > ThisForm.txttodate.Value
ThisForm.txttodate.Value = ThisForm.txtfrdate.Value
ENDIF
In the LostFocus of
ThisForm.txttodate
IF ThisForm.txttodate.Value < ThisForm.txtfrdate.Value
** either
ThisForm.txttodate.Value = ThisForm.txtfrdate.Value
NODEFAUT
** OR
=MESSAGEBOX("UnAcceptable Date value",0+16)
NODEFAULT
ENDIF
You can also force validation and set focus back, just before you start your report or before data update.
____________________________________________
Ramani - (Subramanian.G) 
When you ask VFP questions, please add VFP version.