Aaaah! Invasion of the body snatchers!
I'd use whatever weapon I could get my hands on to fight my way out of town. Then, I'd try to form a band of human fighters to take back my town from zee evil zombies. In my story we're successful. Then we'd rebuild the town with what the land could provide and erect a huge wall around town that would keep us safe. The town would be a refuge for wandering humans.
-oddguy
EDIT: Crap...I forgot zombies can't really die. My weapon would be a shotgun until I could get a better one.