I started using MPLAB recently, but for someone that works with Eclipse and VS the IDE it\'s very limited. Do you know any free IDE or how to configure Ecplise or Netbeans to PI
Some Options:
Piklab (this is a fork of pikdev and better IMO, has a windows version)
Pikdev
You'll probably need gputils which is a set of open source PIC utilities for various things and integrate into the above IDEs.
There is also PIC C builder for Eclipse that would let you build with the C30 compiler, don't think it supports C18 but maybe.