Hi,
Its easy in AC9 (and later I assume) and no programming is required. Just add a path to the "work enviroment" into the registry on each computer.
ie. (windows)
HKEY_CURRENT_USER\Software\Graphisoft\ArchiCAD\version\WorkEnviroment\RemoteProfileSetURL
Version should be your version of AC, should be there allready, and registry is different under mac.
data should be for example
lan.flat:///c:/somepath/defaults/archicad
and in the folder c:/somepath/defaults/archicad are the xml files you export from the workEnviroment screen where you set up your toolbars.
Do a search in the help for companyDefaults for how to setup this folder.
Adam