photos not showing up in itunes

To copy photos to the iPad, connect and select your iPad on the left-hand side of your computer's iTunes, and on the right-hand side there should be a series of tabs, one of which should be Photos - if you select that tab you can then select which photo folders to sync to the iPad. There is a bit more info on this page. You will need to sync all the photos that you want on the iPad together in one go as only the most recent photo sync remains on the iPad - synced photos can't be deleted directly on the iPad, instead they are deleted by not including them in the next photo sync.

To copy photos that you've taken with the iPad to your computer then it's done not done via iTunes : http://support.apple.com/kb/HT4083

You have to import the photos from the iPad to the PC - if that is what you are talking about. You can't sync photos from the iPad to the PC.

You can read about how to do it here.

http://support.apple.com/kb/HT4083?viewlocale=en_US&locale=en_US