The August 2002 update for MSDN contains the Windows Services for Unix 3.0, adding the Interix technology into Windows. Heres the blurb: Microsoft Windows Services for UNIX 3.0 provides a full range of cross-platform services geared towards customers wanting to integrate Windows into their existing UNIX environments. With the addition of the Interix subsystem technology, SFU 3.0 now provides platform interoperability and application migration components in one fully integrated and supported product from Microsoft. Key Distinguishing Feature from SFU 2.0 The most significant feature of SFU 3.0 is the integration of the Interix subsystem technology. The Interix technology provides over 1900 UNIX APIs and migration tools such as: make, rcs, yacc, lex, cc, c89, nm, strip, gbd, as well as the gcc, g++, and g77 compilers.