Gary,
One thing you might "play around" with is the Ole object function in Blue Voda. It is usually bottom left tool.
It can add an Excel table to your site and when viewers see it it is a table of data, but not editable for them. However, when you open that page in BV; double click in the excel area and it becomes an active excel table. You can make changes to it, save the page and republish.

I don't know if it is what you really want, but might be worth trying it!

Forgot to give you a link to one I just published to see if it is what you want!