I'm only on my third batch, so far from an expert. I have sanitized my bottles in the oven and it is very easy and convenient. I make sure the bottles are CLEAN first, then take a piece of foil to wrap on the top. Stack the bottles on their sides in the oven racks. I raise the temp slowly over the first hour until I have it at 350. Keep it at 350 for 2 hours and then turn it off. Don't open the door while cooling, just let them cool slow so nothing breaks.
The great thing about this method is you can do the bottles days ahead of when you want to bottle. Just leave the foil on until you are ready to put the beer in and cap.
I got this from John Palmer's site and he has a temp chart for reference. I also know several friends who use the dishwasher and have had good success