Login script or batch file

I need a script (?) to form part of the login script that checks if the user is already logged onto 1 of 4 terminal servers & calls 1 of 2 batch files depending on whether the user is already logged on or not. I already have the other batch files that call different 'startup' applications - some of which won't run twice for the same user. Script should have adequate REM statements (or external documentation) to explain operation. Alternatives to a script will be considered. Ideally, no other applications will be needed to implement the script. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Environment is MS Win 2003 Small Business Server (Premium) running Active Directory, Windows 2003 R2 File Server, 5 Terminal Servers running Win 2000, 2003 & 2003 R2. Users are geographically spread & connect directly to LAN and via permanent DSL VPN WAN and intermittently via ad hoc VPN over DSL. Workstations are a mix of XP Pro thick clients & Win CE Thin clients & soon to add some Linux based thin clients. (there is also 2 XP Home machines) NO workstations are part of the domain - only the servers. Connections are via RDP not Citrix. Users can also log onto the terminal servers using Remote Web Workplace.