iphone pics won't load

Any ideas on why I can't get my collection of pictures on to my iphone? At one time I could but then started getting the message that there was not enough space on the phone to put them all and (somethng like) in the future photos won't be synced. Now I have more than enough space to put the pictures but still nothing happens. I've tried removing and reinstalling itunes, tried resetting the iphone to original factory settings.

When you connect your iphone, click on it in itunes then go to the Photos tab. It'll let you check a box to sync photos. Click apply and they'll get syncing again. Just so I'm sure, though, you want your photos to sync from your computer to your iphone?