this is my personal favorite tuning.

do you have this tuner: http://www.zzounds.com/item--KORGA30 ? well this is probably the most popular tuner out there, and so I'm asking cause this would probably be the tuner that the guy at the guitar shop tried to sell you when you bought your first guitar. if you do have this tuner or any other tuner that has that button that says 'flat' just push it one time and tune strings 1-5 then push it 2 more times (for a total of 3) and tune your 6th string to that. if you don't have a tuner that has a 'flat' button then you should consider buying one, otherwise it becomes a confusing process to tune and you have to use the method that the guy posted above me said.