Same here. I've had the problem since I was 13. I'm 30 now. A doctor once said it was an ulcer based on the symptoms I mentioned, as far as I can recall, but I know people with ulcers, and they've never exhibited the same symptoms. When they see me having an attack, they look genuinely worried, and always suggest taking me to the hospital, but because I've experienced the pain so many times in the past, I know I only have to bare with it for about 10-20 mins, and then I'll be fine.
Almost any alcohol other than red or blush wines, has me writhing in agony. It starts off as a subtle, and as it begins to increase in intensity, I start sweating a lot, and I can't concentrate on anything but the pain. It's centralized between my ribs, in the center of my abdomen, and it's kind of like a drilling pain. The pain ends rather quickly. I mean, once it reaches its peak, it kind of tapers off over a couple mins, then I'm generally fine after that.
I've also gotten the same pain shortly after waking up when I drink something carbonated, or if I eat some really spicy food, and drink something carbonated, only they're generally not "attacks" like the ones I get when I drink alcohol. Often munching on a couple crackers helps.