I'm sorry, if you're looking for your answer all wrapped up into a nice paragraph you wont get it, there is SO, SO, SO MUCH involved in scamming a script .. your best bet is to pull an ER scam, you could then take the bottle (yeilded at the ER) to your regular doctor and possibly get another script... if you don't have some medical problem then you can really forget about getting a hydrocodone script, if you just complaiend about "pain" there are tons of other drugs they would prescribe before you actually got anything good..
I advise you to search this forum as well as browse the Other Drugs archive (there are several threads in there on scripting) ..
You will most likely be turned down, if you're really persistant and do your homework, and you're willing to go to several doctors appointments each month (and maybe do a few months of physical therapy 2-5 times a week for a month or two) .. you could someday have a script, but it's not as easy as complaining of "back pain" ..