It sounds like this might be the first camera phone you have had. If that is th case, the network does not realize that you have a camera capable of that, and that is why you get the website mesage. To remedy this situation, find a picture on your phone and send it to your self, then grab a different picture, and do it again. Most likely only the second one will come through, but sometimes both of them do. By sending a picture message, you will tell the network that you have a phone capable of sending/receiving pictures and everything should be okay after that.