How to select which kext / driver is used ?

Hi all,

I've got a mostly working hackintosh up at the moment. I have a dual port Intel Pro 1000, and I'm having issues with this - it looks a lot like the problem described at http://www.tonymacx86.com/threads/intel-pro-1000-dies-under-heavy-load.94040/

I've downloaded and installed the replacement kext, but it looks like both the insanely mac and the Apple one are loaded:


How to select which kext / driver is used ?