ActiveHome Pro is X10.com's software that allows you to start automating your home (i.e. turning on lights) without spending a lot of money.  Last week, Wired offered this short ActiveHome Pro Review, the end result of which is: "...for anyone looking to get started with home automation, ActiveHome Pro is worth a shot. The product is easy to set up, even for non-geeks, and the price is right: A starter kit with the software, interface and several modules, remote controls and sensors costs just $100."

ActiveHome - Home Automation Software and Controls is available direction from X10.