I have just recently finished upgrading from EMC2.2 to EMC2.3, fairly painless process, have also added a full range of home switches to my setup ( 750mm x 500 mm router for pattern making ), I am willing to give help if you get stuck with EMC. I killed my first set of stepper drivers ( terminal big bang ) through my own stupidity, currently running on a £35 3 channel driver from china, 3Nm steppers on x & y and a 1.14Nm on z. Controlling PC is an AMD1.2Ghz Athlon with cheap MSI motherboard 512Mb ram and an old ATI graphics card. ( mostly junk kit that wouldn't run the kid's pc games. IO is via 2 Sweex pci parallel cards. The new wizards that come with EMC are a breeze to use and once configured the whole lot can be made so that it starts automatically even from a compact flash memory device that will replace a hard drive, there is even a touch screen version available now.