the old hammer and new window jobby, locked my keys int eh boot of my old focus... pop a window, preferebly the front passenger side one, no seal to replace and piss easy to install a new one.
just be prepared to vacume all teh glass out. neat trick is to cover all the glass thats visable with ducktape, makes a huge difference. not as much glass everywhere!
just go get a new window before you do!