I suffer horribly from saddle sores.
What I've discovered which helps for me is:
1) Get out of your shorts as soon as you can after a ride, sitting around in your shorts is a sure way for saddle sores to develop.
2) Wash your shorts at a relatively high temperature (Water temp not air temp ;D
3)Good quality shorts help, as mentioned in a previous post
4)Don't sqeeze the buggers if they do form, not only is it bloody painful

but it also introduces bacteria into the sore which will make the whole thing worse.
5) I use a mild cortisone, anti-itch cream which seems to help heal the whole thing up. I find the less they itch the less I scratch :-[ and the quicker I heal.
6) Wash the affected area well after a ride.
7)Ride your whole ride standing !!(I find that this is the sure fire way to avoid saddle sores and end up with a severe case of overtraining syndrome.
Have fun, ride hard !