table headers

[Steve Friedman]

I am new to lyx (I found it in a search for an SCM-amenable tool), and 
have a question:

In the standard WYSIWYG tool, the table headers are a different style than 
rest of the table.  How do I get the same effect in lyx?  I would like to 
configure a style such that table headers are automatically emphasized 
with a 10% grey background, without having to configure each table 
separately.  Of course, the next question is how do I select which rows 
are table header rows and which aren't.

Steve Friedman