If you're one of the hapless folks out there still having trouble tracking down a new iPhone 3GS, Apple is making things a little bit easier on you with an online tool to check up on stock at Apple retail stores. There's a full breakdown of color and capacity, which might seem like overkill to some, but given the fact that stores with stock in all four current models are a bit of an exception (outside of NYC, anyways), we'd have to say that this is just the sort of overkill we need.