Innerspace/Isboxer does do core management among many other things. You would do well to use it. Check out the Getting started thread for IS, it has a lot of good info.

I was using Innerspace prior to the launch of IsBoxer and let me tell you, team set up is a snap now. You don't have to edit anything if you don't want to. -or- you can go all out with additonal mapped keys on game pads and large keyboards i.e. G15/G13/Xkeys.