Both are fairly simple, the first one requires that your sudoers file
be set up to not require a password to execute sudo. It will simply
kill the vpnclient, reload the kext and restart the vpn client.
The second one does the same thing but will open terminal.app and
require you to authenticate. It then delays for 10 seconds (to give
you time to type your pass) and restarts the vpn client.
They are available here.