Disable Shipping module if other is enabled?

[mightyx 0]

OK, here's what I want to do:

I want to disappear the "zones" shipping module from the selection in shipping.php if another module is enabled (the other module is a self programmed shipping module).

My plan was to tell the zones module to be disabled (enabled = false) if the other module is enabled (enabled = true). But how do I do that?

Edited August 7, 2012 by mightyx