My iphone will not connect to itunes after upgrading to ios 6?

I just upgraded my iphone 3gs to ios 6 not sure if it updated but now when i turn on my phone it says automatically that i need to connect it to itunes using the USB port but when i connect it it comes up as new hardware and can't find a program/software for my device even though i have the latest itunes on my computer. I have tried reinstalling itunes but it still can't find my phone and now i can't use my phone as it is stuck on the sync to itunes screen

I actually just updated my iphone as well to 6.0 and then it had asked me to connect my iphone to itunes to which i did and now it won't read my iphone and i'm so scared by pressing restore that my iphone will start a *** storm and ill lose everything and everything will go back to factory settings i do not know what to do let alone i'm not sure what to do anyone else with this issue?

Same here.can't do anything and download times are 3+ hours.keeps shutting down and restarts on its own

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