Itunes wont recognize my Iphone 4 but Windows will

I have a problem where my Iphone does not come up in Itunes, The phone charges when plugged in to the computer and also appears in My Computer, It also works fine when plugged in to other computers, it appears in itunes in other computers and works fine just not on mine. I have been through all apple support pages and have had multiple phone calls with apple support, I have also sent my computer off for repair since and all USB ports and drivers have been updated and checked and are all working fine. It seems there is no solution but if anyone has any ideas please help?