I need a macro that changes fonts in an excel document from:

Goudy Old Style to Garamond
-and-
Avenir 45 Book to Gill Sans MT
-and-
Times New Roman to Garamond

If there are other fonts in the document I want to leave them as is.
I
am only concerned with the above 2 fonts.

I have a ton of documents to do which is why I want a macro for it.

Thanks in advance for your help.

Eli