Getting started with writing tests

Hi Folks, I'm interested in participating in test fest and just have some questions. I've read through the docs at qa.php.net (although, please point me to the right place if I've missed it) but it is unclear to me how to: * run and re-run tests * run just my tests I briefly read through the run-tests.php script and the Makefile in which env vars are set up, but is this the best way? To test just my phpt files, should I move the other tests out of the way so it just executes mine? Thanks, Tom