Just updated the IOS 6 on my iphone 4. Where do I change the text messaging format?

I had to do a system reset on my phone. Lost everything now struggling with the new OS6 to find things.
The messages come up with the message on my screen, instead of just the senders name. I can't find where to change this. Anyone help?

Go to settings- notifications- messages- show preview (off). You can also choose if you want badges/banners or alerts.
I also had loads of problems updating to IOS6. My phone had a system failure whilst plugged into iTunes, and luckily backed itself up before it died. It's back to normal now but what a nightmare it was!