settings>>messages>>MMS messaging ON. type up a text like you would do so.in the left hand lower corner over the Q you will see a little camera icon tap that! it will say take a photo of video or choose exisitng. once you have choosen a photo or taken a photo you will see a blue box on the right hand side says choose tap it. this will insert the picture into the text msg now send it. if you choose existing scroll threw the camera roll to find the pic you want,like said tap the choose button then hit send.
hope this helps if you can figure it out. tomorrow i can take screen shots and upload step by step pics for you.