[link|http://www.boinc-doc.net/_phpMyFAQ/index.php?action=artikel&cat=291806&id=349&artlang=en|Here] is a FAQ with lots of Mac OS X trickery for running a BOINC client like [link|http://z.iwethey.org/forums/render/content/show?contentid=195543|Einstein@Home].
Some neat stuff there. :-)
Cheers,
Scott.