Um, I found a few tests right here on PC, but nothing especially for personality disorders. I mean these here:
PsychCentral.com quizzes
I would be interested in online resources, too, in order to check my status quo.
As far as I know, most of the "official" tests are copyrighted, so I can imagine it's not possible to get them for free. But I may be not informed well enough about that.
So, if anybody knows something, please let me know...
bluna