IPhone :: Arrange Express Replacement Service Online?

I have an iPhone 4 that I dropped (hard) on a tile floor. Back screen shattered, but phone still worked okay. Now, the wake/sleep button stops working intermittently. Point is, it's my fault, I broke it, and it's out of warranty anyway. I'd like to pay for an express replacement (I understand I can pay $100 or $149 or thereabouts, and Apple will exchange for a refurb; they send, charge me a deposit, then credit back the difference when I ship mine back to them). I can go to the Apple store if necessary, but would prefer to do this online (the instructions for ERS refer to the capability to arrange it online).I cannot, for the life of me, figure out how to do this online. I log into the online service advisor, and it only gives me the option of sending my phone in for paid repairsIs there a way to set this up online? (I would prefer online than having to call them