I've never done this, and not sure exactly how to go about it (besides the obvious) or why I should do it. Any suggestions?
It's well worth having a go IMO... take a look here :- http://www.aneros.com/ There's a forum there too to see what people's experiences are, I've never been a able to reach an orgasm solely through prostate massage, although I feel like I've got close... but it definitely can give really intense orgasms when combined with regular masturbation.