move photo's from camera roll to photo stream
I am confused. I have a number of photo's in Camera Roll. They apparantly do not back up to iCloud as part of Photo Stream. Is there a way to move them from Camera Roll to Photo Stream so they will be available to my other devices, or do I have to manually copy them to my desktop to make them available? If the latter, what is the best process for this?
iPhone 4, iOS 5.1, Sprint