Don't worry: you have until 2013 - when the new edition comes out; and yes, hasn't this taken an eon already? - to indulge your narcissistic self, after that, sorry, but you're bumped.
Like the rest of us, you'll revert to being a self-absorbed prat with an unappealing personality that can't be passed off as a medical illness.
Of course, the first question that should be asked is: hands up all narcissists who’ve sought a cure for their grandiose sense of self, serious miscalculation of abilities and potential and fantasies of greatness?
Out in the real world, I'm guessing that those who are armed with a narcissistic personality disorder will be nonplussed about being expunged from the DSM.