I've spent hours trying to figure out why Photostream is not working with my iPhone 4 and PC. I have set up everything in my iPhone 4 from Settings>iCloud (turn photo stream on) and also of course Settings>Photos (turn photo stream on), and also set up my iCloud control panel on my PC with Windows 7 (checked the box for Photostream (and also made sure that the folders are correct under options.) And, of course, in iTunes the setting is to back up to iCloud. Photos I take on my iPhone don't go to the computer and photos I drag into the upload folder do not go to the iPhone. Tried syncing, backing up, resetting photostream from icloud.com. Help Please!!!!