1. Find "IC2.cfg" (Its in the 'config' folder of the .minecraft directory), and open it with a standard text editor (use notepad for windows, textedit for mac) 2. Look for any reference to quantum armor/uu matter, and find the variable the comment is associated with 3. Set "foo = 1(IIRC, could be yes, true, or something else)" to "foo = 0 (no, false, etc.)"