Iphone restore.?

[bigchollz]

I accidently deleted a txt message conversation that i wanted to keep. I know that when you sync your iphone, it stores all the txt messages too. is there a way to restore it so it goes back to my last sync point, and get all my txt messages back?
so i cant get my messages back?

 

[jimmyphoneking]

no text will be found these are not like applications that are built into phone