How to restrict the go menu with workgroup manager

Hi all!

I work at a school and we have two apple mac suites all running snow leopard 10.6 and I'd like to restrict the Go menu and some items under the apple menu. Recently the apple mac tech has left us leaving me holding the reigns and I'm not mac orientated, I'm PC through and through. He has left me some instructions as follows

At present this is how we lock the menus down:

#!/bin/bash

cd /Users/administrator/Desktop/Lockfinder/Lockdowngo/MenuBar.nib

sudo cp -r * "/System/Library/CoreServices/Finder.app/Contents/Resources/English.lproj/MenuB ar.nib"

cd /Users/administrator/Desktop/Lockfinder/Lockdowngo/PreferencesWindow.nib

sudo cp -r * "/System/Library/CoreServices/Finder.app/Contents/Resources/English.lproj/Prefe rencesWindow.nib"

This is how we unlock the menus:

#!/bin/bash

cd /Users/administrator/Desktop/Lockfinder/Restorego/MenuBar.nib

sudo cp -r * "/System/Library/CoreServices/Finder.app/Contents/Resources/English.lproj/MenuB ar.nib"

cd /Users/administrator/Desktop/Lockfinder/Restorego/PreferencesWindow.nib

sudo cp -r * "/System/Library/CoreServices/Finder.app/Contents/Resources/English.lproj/Prefe rencesWindow.nib"

This takes AGES to do it on all the machines in turn so I was hoping there are features in workgroup manager to do this for me?

Everything is done under computer groups and not user groups because we have an Active Directory domain which handles all of our users.

Any help would be fantastic!

Thanks for reading

-Graham