Scripting

We have a couple of hundred Macs that will need to automatically connect to a Windows (AD) share when they log in. To set this up with the GUI is pretty easy and using the Mac server Profile Manager wouldn't be that much harder. The problem is that we have too many Macs to touch each one and we're not running any Mac servers. What I'm looking for is a way to script (probably a shell script) a profile change that would let the shared drive auto-mount when the user logs on.