Shanea, if you turn on the map option labels they will always be "under" the color fills. However if you have a column in your data that has the county names, then all you need to do is put that on the label shelf and the names will be on top of the fills. If you don't like that, the other thing you can do is 'hack' the underlying map to darken the labels and the county borders so they show through the fills.

--Shawn