`Are You Sure You Want That Skylight On The Floor?'

For many homeowners, starting an improvement or renovation project can be a trying task. One of the more difficult first steps is figuring out exactly what you would like your revamped room or house to look like. But now, a simple personal-computer program can help you design and electronically tour your dream house easily before even a single nail is hammered in.

The software, called myHouse, is a computer-aided drafting (CAD) package created by DesignWare Inc., a Watertown (Mass.) startup. Like other CAD programs for PCs, the $130 package allows amateur architects to produce professional-looking two-dimensional floor plans by simply pointing with a computer mouse where things should go. What's more, the program can reproduce the design on screen as a so-called virtual image. More than just three-dimensional pictures, the software lets remodelers choose different "camera angles," to see how adding cabinets, say, might cast unwanted shadows across the countertop.

Before it's here, it's on the Bloomberg Terminal.