Sigplan template, the continuing saga: Paragraph indents

In my continuing efforts to get a sigplan compatible docbook template,
I'm going pretty well, and getting much further than I ever thought that
I would. I'd like to present a small issue that I haven't found a quick
solution to:

How do I make it so that the first paragraph after a section heading is
not indented? I have it so that all paragraphs are normally indented by
a small amount, but I can't seem to remove the indent for paragraphs
occuring right after the section heading. Any suggestions would be
appreciated. 

-- 
Aaron W. Hsu |  | http://www.sacrideo.us
לֵ֤ב חֲכָמִים֙ בְּבֵ֣ית אֵ֔בֶל וְלֵ֥ב כְּסִילִ֖ים בְּבֵ֥ית שִׂמְחָֽה׃