I think this kb article will be able to answer your question: Answer Title: Can I access my PC account on my PS3™? Answer Link: http://help.soe.com/app/answers/detail/a_id/28880
I have da same problem, well sorta, I wanna link ma forums account with my psn one so u know people can see ma dcuo character and stuff. Anyway, i'd appreciate it if I got a response, thnx!