ASP.Net 2.0 and and Access 2003 (development only)/SQL Server 2005 e-commerce air conditioning sales website. ASP.Net 1.0 and Access 2000 (development only)/SQL Server 2000 commercial real estate cost basis algorithms, purchasing system and document management. ASP/SQL Server 2000 web site for online trading of equipment. Development of wastewater treatment plant Excel/VBA models. SQL Server 2000 cost estimating database with ASP front end. MS Access 2000 version of cost estimating database produced for distribution to client machines. MS Access 2000 "shop drawing" log to keep track of engineering submittals.