Sage Software has recently announced that "Microsoft® Windows 7 is here, and Sage Accpac is ready!". Sage Accpac ERP versions 5.6, 5.5, and 5.4 (the current version and two prior versions) will be supported on Microsoft Windows 7 upon the general availability of Sage Accpac Version 5.6 in early December 2009. Windows 7 support will be limited for certain configurations in the Extended Enterprise Suite and some third-party software components that operate together with Sage Accpac due to the timing of product release and legacy issues.
Please refer to the tech notes for more details.