Houseplans, Inc. Acquires Abbisoft House Plans, Inc. Acquisition Adds www.homeplanfinder.com to Network of Websites NOVATO, Calif., Oct. 5 /PRNewswire-FirstCall/ -- Houseplans, Inc. ("Houseplans.com"), a wholly-owned subsidiary of International Microcomputer Software, Inc. ("IMSI") (OTC:IMSI) (BULLETIN BOARD: IMSI) , and a leading supplier of ready-to-build house plans on-line, announced today the acquisition of Abbisoft House Plans, Inc. ("Abbisoft") the operator of the well known http://www.homeplanfinder.com/ website for a combination of cash, notes and common stock of IMSI in addition to the assumption of certain liabilities. The acquisition will make Houseplans.com the number #1 provider of quality stock house plans on-line with more than 20,000 plans available to customers. Abbisoft has operated its stock house plans business for more than ten years and has become one of the leaders in the fast growing market. In addition to more than 6,400 plans available to customers, Abbisoft also has an impressive array of content and tools to help home owners and builders economically build their dream houses. Abbisoft is currently cash flow positive and is expected to be accretive to IMSI's consolidated earnings in the fiscal year ending June 30, 2005. "We are very excited about joining forces with the Abbisoft team," stated Marvin Mauer, CEO of Houseplans, Inc. "We share a common vision for the on-line stock house plans market. It is our common belief that we need to offer the widest array of content and services in order to ensure that our customers are able to make the best possible choices for their most significant investment, their dream home. The Abbisoft team has aggregated an impressive number of plans, home building content and tools which will improve the quality of our total offering." "This is another significant milestone for our Houseplans, Inc. subsidiary, said Gordon Landies, President of IMSI. "This acquisition provides Houseplans with 40% more content and a leading website for the sale of house plans to contractors and builders. We expect our overall traffic to increase substantially, and the acquisition adds 110,000 subscribers to the http://www.houseplans.com/ mailing list." "Houseplans.com is one of the leaders in the stock house plans industry, and we expect to accelerate our growth by expanding our product offerings and customer base," stated Ken Katuin, President of Abbisoft. "I look forward to joining the Houseplans.com team as Vice President of Strategic Development and will continue to grow and strengthen our combined content and services." About Houseplans, Inc. Houseplans, Inc. (http://www.houseplans.com/), a wholly owned subsidiary of IMSI (R), is focused on expanding its network of web properties to serve the rapidly growing market for the sale of stock house plans on-line and related home building services. The company's mission is to help customers find and acquire the perfect plan for their dream home by offering the largest selection of quality house plans and providing an experience that exceeds all customer expectations. More information about Houseplans can be found at http://www.houseplans.com/ and http://www.houseplanguys.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. 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 & Business Software Solutions division, anchored by our wholly owned subsidiary Allume Systems (formerly Aladdin Systems) which 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, 2004, 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: Gordon Landies, +1-415-878-4000, or , or investors, Bill Bush, +1-415-878-4039, or , both of International Microcomputer Software, Inc. Web site: http://www.homeplanfinder.com/ Web site: http://www.imsisoft.com/ Web site: http://www.houseplans.com/

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