Jeff's dashboard

I have spent hours trying to sync my iPhone 3G with my work calendar that uses outlook 2003 but it won't sync. I have a colleague with the original iPhone with the 2.0 software and doesn't have a problem syncing. I have tried everything that the blogs have said and still no luck. Help!!!!! This includes un-installing iTunes, detected and fixed outlook, reset the sync history in iTunes, and many other steps. Please help!