"I only had two glasses of wine." It's not an unreasonable amount to drink with dinner, yet how much you feel from those two glasses can vary widely - whether you're worried about a curbside Breathalyzer or just hoping you don't feel the effects the next day. Despite the frequent discussion of rising alcohol levels in wine, the effect on blood alcohol concentration is often overlooked. Does it matter whether you'd been drinking a lean white at 12 percent alcohol instead of a ripe Chardonnay with 14 percent alcohol or a high-octane Zinfandel?