IPhone keeps saying "Please Connect to ITunes" and does nothing else

I have it connected to the computer with ITunes running and it will not do anything. I have tried updating ITunes, restarting my computer, etc., and nothing works. I cannot get it to sync either. This is my work computer. My main ITunes computer is at home and I can't access it right now.

What can I do to where I can use my phone???? Please help.
Thanks.
E