I tried to leave a comment, and positive feed back on this dev share and it would not take. I had a simular problem a few months ago, not sure if I mentioned it then or not.
http://www.birt-exchange.org/org/devshare/designing-birt-reports/1594-columns-to-rows-in-birt-data-set/
http://www.birt-exchange.org/org/devshare/designing-birt-reports/1594-columns-to-rows-in-birt-data-set/