I have an application in excel  which could be greatly enhanced by
having a map. How are yours placed/imported into the sheet?
The CTRL-scroll-wheel zoom works to three levels in this IE
browser when reading this group.
It zooms to many levels in my Excel 2002 and centers approx on the
cell selected. I pasted a jpg  into an Excel sheet and it zooms as
well.
Next try turning on the macro recorder and see what the CTRL-
Scroll-wheel yields.
Now if I can plot lines on the jpg, I have what I want.