Just keep them some place cool and dark. I think that the BCS bottles say they're good for up to 5 years of aging in the bottle. They're probably fine for more, but I've never had one older than 3-4 years before.
I really only age imperial stouts, barley wines, sours, wild ales and lambics. Any IPAish beer isn't a good candidate for aging, as the hops will fade out of the flavor profile over time. There are obviously some exceptions to that rule, but I don't age Hopslam, Sculpin or Pliny The Elder. Those babies are meant to be drank while fresh.