Lock global subs

[HippyCraig]

I have VB 8 on my build machines, we have a number of team memebers that log in and perform builds. We are having an issue were someone is altering the Global Subs, is there a way to prevent them from making changes or present a warning. I was even thinking of making that Global Subs Read Only if it was stored in a file somewhere.

Any idea's?