How can I text pictures on my iPhone to people who don't have iPhones?

Problem: I have a new iPhone 5. It is unlocked and uses T-Mobile. Using iMessage, I can send/text pictures to other iPhones. But I can't text pictures to phones that are not iPhones.

Solution: just go to this link and follow the directions. They work as of May, 2013.

Details: Under settings, general,cellular data, MMS, make it look like this. You will need to go to the link above to get the full addresses will need to enter.