Plists and Multiple User Names

Hi, I've run into an issue with a piece of software (Autodesk Alias Automotive 2010) and environment variables. All our users details are in AD, with an Xserve and OD managing user and computer groups. I generally distribute plists via Workgroup Manager. I need to create and add a specific 'environment.plist' for each user of the above application. The plist needs to end up here: /Users/user_name/.MacOSX/environment.plist The 'environment.plist' needs to contain the following: 
 


 ALIAS_WORKENV 
**ENTER LOCATION OF WORKING ENVIONMENT** The working environment location will be something like: /Volumes/Media/User_Name/Alias Working Environment Folder How can I distribute .plists to specific users en masse? There's approx 100 users for this particular application. What's the best way to create the above file. I've tried it with textedit in plain text mode, but WGM doesn't like the resulting file. I then took an existing .plist, which I renames and edited. WGM appears happier. Any advice greatly appreciated!