For most people the surgery is not bad. I had all 4 removed seperately (no dental insurance = $$$$$), 3 of which I was awake for (no one to drive me home so therefore no getting put under.) Only one of them really bothered me pain-wise, and I never got bad swelling. Even if it IS bothersome, it will only be for a day or so. You\'ll be fine.
Go easy on the smoking for at least a day or 2. Which will be hard because you\'ll want to smoke a lot, especially if you are, errr, liberal with your usage of painkillers. But I do know one person who got drysocket (I think that\'s what it\'s called) from smoking too much. Don\'t get that.
Also try not to drink a lot the day before/after the surgery. It will make you bleed more.
Other than that... lots of chicken noodle and minestrone soup, milkshakes, and other such delicious liquidy things. Fuck the jello unless you have a lot of whipped cream.