How to connect my iPhone 4 to a different computer?

My laptop that I would normally hook my iPhone 4 up to is currently unavailable so I want to connect my iPhone to the desktop computer that I have at my house. I downloaded iTunes and plugged in my phone, but a window popped up that said the pairing data was missing. How do I fix this problem?

You have the old settings. When itunes synchronize iphone and desktop, iphone keep in memory
file with parameter and value of last synchronization. You have to resync the iphone but be attentive of synchro type. It can be unidirectional or bidirectional, a agenda of outlook has to suffer or iphone agenda. Select folder to synchronize and synchronisation type.

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