Estimation Inc., Linthicum Heights, Md., recently awarded Chip Greene, president of mechanical contractor Greene & Associates, a free computer and software. Names were gathered throughout Estimation's trade show season this past fall and Greene was the lucky winner of a new 800 MHz Pentium III computer and 17-inch monitor from Dell, along with Estimation's Bidmaster NET Plumbing Series software as well as the new Microsoft Windows Millennium Operating system and Works Suite 2001.