Help with sending Photos

I have an iPhone 3GS, using ATT unlocked and had to go through some stuff when I got it to get it to work right back last December, but it worked fine after that. I updated to iOS 6 when it came out, which is basically pointless on my phone but oh well I didn't know that at the time. Anyway, it's working fine, except I can't text pictures. I think thats the same problem I had when I bought my phone, too.

Does anyone know how to fix this? Apple support forums was not helpful- which is typical they never help. If anyone has any suggestions, I'd really appreciate it. Thanks

 

Sorry for bumping this, but I need to figure this out!