I have Windows 7 64-bit on my MacBook Pro. I have Windows Live Mail installed. When I sync iTunes to my iPhone 4, under the Info tab it says "No supported application can be found" for the Calendar and Mail sections even though I have Windows Live Mail and it has a calendar in it. I sync with iCal and Mail just fine on my Mac side but iTunes on my Windows can't even seem to realize that Windows Live Mail exists. What gives?