@Joe:
Haha, I didn't know what I was doing either.

They fail to tell you some very important information, such as the fact that you have to pay each of your soldiers 1 gold per turn. I piled up over a dozen soldiers before realizing this, and had to spend a day's games bankrupting myself so that I could get rid of them. (That was only after I spent 3 or 4 days trying, and failing, to obtain enough gold for the next building.)

Anyway, I don't think you can restart the game without restarting your account, but if you don't take any turns for a couple days, you'll die and you can start over fresh.

(Either way, you'll be forced to start over fresh once somebody takes over the kingdom.)