Can i get a new phone and texting for just me even tho im already on a family plan?

My whole family (5people) have razorphones and no one has a texting plan.. but i want to get a texting phone and texting for just me cuz id pay for it. so would i be able to do that or would my whole family have to do it too? or would i have to wait until our contract was over to get a new phone and the texting? im with att.

you can add texting to your phone only even though you are on a family plan there is still a separate contract for each number on the plan. the new phone thing it might cost a lot to get a new one with no 2 yr price drop but you can search craigslist or ebay and might find one