You might find this blog encouraging, or at least get a laugh:
http://www.spdbloggernetwork.com/2011/04...ng-issues/
My son would not eat any vegetable if it was cooked, except corn on the cob. The only raw veg he would eat was lettuce and cucumber. These are the least nutritious vegies on the planet, so in effect, he did not eat vegies.
Fast forward five years later, he's 25, married, and his wife has him eating all kinds of vegies, cooked and raw. The one thing he still can't get past is peas. They make him gag every time.
I asked his wife how she got him to do it. She said she told him when they had kids she would not tolerate a picky eater, so he had to learn to like some vegies to be an example to their kids. Amazingly her strategy worked!