Wayne,
Try registering the dll:
Unzip the Word 2003/2007 version of mscal.ocx into C:\Windows\SysWow64 instead of C:\Windows\System32. On the Start menu, right-click the Command Prompt and choose Run As Administrator. An ordinary command prompt or Run box doesn't have the permissions needed to do the registration of the ocx.
- At the command line, enter these two commands:
cd \windows\syswow64
regsvr32 mscal.ocx
That will register the calendar tool. When you go into Word 2010 and start a userform, right-click the toolbox and choose Additional Controls. The calendar will be listed as "Calendar Control 11.0", and it does work.