FireFox proxy settings on managed clients

Hello, I am trying to find a way to propagate FireFox proxy settings from the server end on a 10.5 Server with roaming profiles. FireFox ignores the settings specified in Prefrences/Network/Proxies, and I have not seen anything in my searches on the web that shows a way to force the settings. I know that I can manually copy prefs.js into user directories, but that would take forever. Also, FireFox uses random names for it's profiles, for example "sur39klx.default". This makes mass copying from terminal difficult, if not impossible. At least as far as my knowledge goes. I tried a cp command in terminal with wild cards for the username and the profile name (/Staff/*/Library/Application\ Support/Firefox/Profiles/*.default/prefs.js and /Staff/*/Library/Application\ Support/Firefox/Profiles/*/prefs.js, but it did not like either. It seemed to be ok with one wild card for either the uername or the profile, but not two. Maybe I am missing something, but there must be a better way to go about this. Any advice would be greatly appreciated. Thank You in advance.