I don't think they (paedophiles) can't help their sexual desires. I recently watched that film, a paedophile goes thru a lot of suffering trying to fight the social stigma, fight against his dark urges, trying to lead a normal life...he ends up chopping his bits off. Neat.

ANyways, sex with minors was commonly accepted in many past cultures and in places such as Japan, which doesn't make it right, but it shows that it is not some kind of "new, western evil". I believe there is no cure, the only thing that could be done is treatments with drugs that supress arousal (yes quemical castration) and hope that they could lead more or less normal lifestyles.