Our state-of-the-art technology, features and capabilities continue to improve and expand rapidly and periodic updates is recommended. We are pleased to be at the forefront of this computer technology and to continue to advance it to an unprecedented level of reliability, comprehensiveness, and performance. H2ONET 4.5 Upgrade to H2ONET 7.0 for AutoCAD 2007, 03/12/2007 Upgrade to H2ONET 4.7 for AutoCAD 2002 (18.80 MB), 07/08/2004 H2ONET 4.5 Update 004 for AutoCAD 2002 (3.02 MB), 08/22/2003   H2ONET 4.5 Extensions (Requires a suite license) Skeletonizer Extension (1.88 MB), 06/03/2003