+1  A: 

menu setting - Set it's orientation to Horizontal.

klabranche
I did that but there still is only one root node allowed - so all I see is Home and then the main categories appear as dropdowns under it instead of showing horizontally.
John M
thanks for getting me thinking about the properties.
John M
Ah... Good catch.
klabranche
+2  A: 

I needed to set the 'StaticDisplayLevels' property of the menu to 2 from the default of 1. This enables the 'root' and 'main categories' to display horizontally instead of all grouped under the 'root'.

John M