Currently Being ModeratedJan 8, 2013 3:34 PM (in response to timr169)
troubleshooting message http://support.apple.com/kb/ts2755
Do you have MMS turned on in settings?
Are you provisioned by your carrier to send/receive MMS?
Have you tried a reset, no data loss, hold down the home/power button until you see the apple logo and then release, then wait for the phone to boot back up.