I was able to logon to the domain's 'netlogon' share using the following DOS command...
net usr \\domaincontroller\netlogon /user:dotteddomainname.com\username password
Of course, where 'domain cntroller' is our domain's main controller. Where dotteddomainname.com is our organization's dotted domain name, thesystem.com for example. Where username and password are the username and password.
Needless to say, it is highly recommended that you not have passwords stored in plaintext files. So if you go with a parameter-less batch file you will want to make sure that batch file is in a secure location.
Regarding login scripts and whether or not they will execute, I can't tell you. We're transitioning slowly from netware to Win2k3, and still have the login scripts executed by Netware. However, the '/home' switch might be of assistance. Just try it and see if the script does execute.
I still don't understand why the PCs are auto-logged in, if they need local admin rights, just setup each machine with the domain user account in the local admins group. This is better than making 'domain users' local admins, as that would make anyone be able to admin anyone else's machine.