We have uploaded a major upgrade of our packages R (D)COM Server V1.2 and RExcel 1.0 The combined package is available in the Software->Other section of CRAN From the documentation: This package contains a COM server used to connect a client application (e.g. Microsoft Excel) with R. An Add-In for Microsoft Excel is provided as well as Active X controls to be included in your applications. Thomas Baier Erich Neuwirth