That depends largely on how loose or tight the BB is, but my typical stealing range from the SB is:
22+, A5o+, A2s+, K7o+,K4s+, Q9o+, Q6s+, J9o+, J7s+ and T9.
I adjust this range up if the guy in the BB is tighter, and down if he's loose. The first hands that I adjust away are the crappier offsuit ones. I never fold pairs.