[Samba] how to mount network share at boot time with no user log in?

[Greg]

Hi, 
    Probably not the place to ask but here goes.

I'd like to know how to have windows mount a network share as the system 
comes up,  without having any users logged in.

reason:  we have a service which  runs in the background to render 
jobs,  it depends on being able to access files on our samba file 
servers.  currently the shares are only mounted when a user logs in on 
the windows machine.  If the user logs out,  the shares go away and the 
background rendering service dies.

thanks for your time,
greg