Want to know how much your boss paid for that new house she bought last year or whether the money the government says your house is worth jibes with the value of your neighbor's house? Well, thanks to modern technology, you can get a pretty good idea without leaving the comfort of your home or office. Just get onto the Internet, type in www.dallascad.org, hit enter, and you're there. This Web site, which is remarkably easy to use, allows you to search for properties by the name of the owner or the address. It also allows you to search separately for residential or commercial properties. Besides lot and building values, you can also find out things such as how many baths are in a house, whether it has a wet bar and when the house was last sold. If you're looking to buy a new home, this is a tool that comes in particularly handy.