Thanks. I have checked my settings on both my iPad2 and my iPhone4s and they both are set to 'my photo stream' on and 'Shared photo stream' on. The photos from my iPhone are still not on my iPad
the two devices must be on the same wifi network for this to happen. also, once you turn it on, only photos taken AFTER turning it on will show up in the Photo Stream.
Go to photos, click edit, select the ones you want to send to the iPad. Click the share button, and select photo stream. Enter your own apple ID in the "To" section. And they should upload to the photo stream
On your iPad, launch photos app and click the "photo stream" tab at the top, your pictures should be in one of those folders. It may take a while to upload depending on the number and size of the pictures. From there you can either save the photos to your iPad or just leave them in the photo stream