Can help you with one month drop-down ....

not sure this is you
answer

...
Create a blank userform and place the DTPicker control as the onl
control (DTpicker may be on your controls TOOLBOX menu; if no
right-click on the TOOLBOX select Additional Controls and locat
DTpicker)
you need to initialise the userform :
Private sub Userform_Activate()
Me.DTpicker.value = Date
end sub
and also set an event for the DTpicker control ( I have this set t
record the selected date then hide the userform):
Private Sub DTpicker1_Closup()
Activecell = DTpicker.value
UserForm1.hide
End sub
I have then a simple calling macro (triggered by a keyboard shortcut
that has a single line :
Userform1.show
- hit the shortcut to show the dialogbox, select the date and it i
entered in the activecell;
you could use the Calander control if you prefer the look but this i
still one month only ...
Don't know how to make this display 2 months together; any idea
anyone? :confused