running Excel 2003 (going to 2007 in the next few months)

I have inserted a pop-up calendar (Insert/Object.../Calendar Control
11.0). No problems getting it to do what I want - except when I
declare my variables (Option Explicit).

I can't seem to determine what type the Calendar object is - Dim
Calendar as Object returns a "Block Not Set" error.

Any sugegstions?

Art