iphone wont power on

I jailbroke my phone and it has worked fine except for a lil slow, but today I realized I couldn't post on updates from facebook. So I deleted it and then tryed to download it from the app store tonight, but it said already installed even though I deleted it, so I thought I would shut it down and restart the phone.
Now the phone wont power up fully the apple comes on but only for three or four seconds then it goes blank I can shut it off while the apple is lit but nothing else.
I tried hooking it up to itunes to see if I could just restore it but my laptop wont recognize it, during the short time the apple sign comes on.
I cant take it to an att store because it is jail broke right?
ITCH
We leave for Disney in 13 days and I have no other phone
HELP

I don't have a fix myself but I would say to check craigslist. There are usually a few guys in most areas that do good iphone repairs. Search craigslist for "iphone repair" and see what kind of results you get.