Houseplans.com Offers the Largest Collection of Online House Plans NOVATO, Calif., Dec. 3 /PRNewswire-FirstCall/ -- Houseplans, Inc., a leading supplier of stock house plans, announced that it now offers over 18,000 house plans on its flagship website, http://www.houseplans.com/, the largest on-line collection available to consumers and residential contractors. The collection of house plans represents the best designs of over 120 leading residential designers and architects in North America. "We are very pleased to offer customers the largest and most diverse selection of house plans to choose from," said Jeff Spring, President of Houseplans, Inc. "Customers appreciate our efforts to ensure that all of our plans are high quality and their purchasing experience is first class. Their appreciation is demonstrated by the fact that both new customer and repeat customer business are at an all time high." "We believe that, by offering the largest collection of stock house plans on-line, our market share will continue to increase," said Marvin Mauer, CEO of Houseplans, Inc. "With our strategy of aggressively acquiring content, related web properties, and customers, we will continue our growth in this $500 million segment of the home construction market." About Houseplans, Inc. Houseplans, Inc. (http://www.houseplans.com/), a wholly owned subsidiary of IMSI (R)(OTC:IMSI) (BULLETIN BOARD: IMSI) , is focused on expanding its network of web properties to serve the rapidly growing market for the sale of pre-designed house plans on-line and related home building services. In addition to houseplans.com, the company also markets stock house plans and services at http://www.houseplansguys.com/, http://www.homeplanfinder.com/ and http://www.prohouseplans.com/. The company's mission is to help customers find the perfect house plan by offering the largest selection of quality house plans and providing service that exceeds customer expectations. More information about Houseplans.com can be found at http://www.houseplans.com/. About IMSI Founded in 1982, IMSI has established a tradition of providing the professional and home user with innovative technology and easy-to-use, high-quality software products at affordable prices. The company maintains two business divisions. The Precision Design division, anchored by IMSI's flagship product, TurboCAD(R) and the DesignCAD(TM) line, also develops and markets other visual content and design software such as FloorPlan(R) 3D and TurboCADCAM. The division also includes several online properties focused on the sale of content and services to the architectural, engineering and construction market thru its stock house plans site at Houseplans.com, its CAD add-on store, Cadalog.com and the online CAD symbol site, CADsymbols.com. The Consumer Software Solutions division, which is anchored by Allume Systems, Inc. (formerly Aladdin Systems, Inc.), provides small businesses and consumers with software solutions through its popular products such as StuffIt(R), Internet Cleanup(R), SpamCatcher(R), TurboProject(R), FormTool(R), FlowCharts&More(TM), HiJaak(R) and TurboTyping(TM). More information about IMSI can be found at http://www.imsisoft.com/ and http://www.allume.com/. Safe Harbor Statement This announcement contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, Section 21E of the Securities Exchange Act of 1934, and within the meaning of the Private Securities Litigation Reform Act of 1995. Actual results could differ materially from those projected in the forward-looking statements as a result of various factors including the ability of the company to successfully commercialize its new technologies as well as risk factors set forth under "Factors Affecting Future Operating Results" in the company's annual report on Form 10-KSB for the year ended June 30, 2003, and such other risks detailed from time to time in the company's reports filed with the Securities and Exchange Commission. The company undertakes no obligation to publicly release the result of any revisions to these forward-looking statements, which may be made to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events. DATASOURCE: Houseplans, Inc. CONTACT: Danielle Garbarino of Houseplans, Inc., +1-415-878-4266, or Web site: http://www.allume.com/ Web site: http://www.imsisoft.com/ Web site: http://www.houseplans.com/

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