undo syncing with old phone
I was trying to sync my phone so that I could add pictures to my Windows live photo gallery. Instead I synced my iPhone 4 to my new iPhone 5c. I want to undo that.
iPhone 5c
Restore the last backup of your iPhone 4. Then, to import photos to your PC you don't sync with iTunes. You import them as explained here: http://support.apple.com/kb/HT4083.