im slowly building a small cnc grizzly lathe and ive decided to go with g540 drivers based on the fact i want to eventually have an additional axis attachment for small milling and i like plug and play . My question is if i go with the g540 drivers should i buy a uc100 and use the laptop that i have the software on,or buy an ethernet smoothstepper,or just buy a cheap desktop computer that has a parallel port?