In Excel 2002, I want to combine three cells (City, State, and Postal Code)
into a single cell. I know this string will work for putting a space in
between each item:
=A1&" "&A2&" "&A3
This yield this type of output: Seattle WA 98102

What do I do to place a comma after the "city" so that it yields this type
of output:
Seattle, WA 98102