I'm not sure if in the frustration of breaking your key you thought about just locking the car and using a spare key, if no spare key is available then sorry, I can't help you. I can check my Chilton's when I get home.
In the trunk on the passenger side trunk hinge there MAY be a sticker with 5 numbers on it. that is the default code for the Keyless entry. If the sticker has been removed, in the trunk on the drivers side, there is a panel behind the carpet, along the back of the wheel well. Remove the cover and attached to it is the module. On the module is a sticker (if it hasnt been removed0 that also has the default code.