Hoping to attract enterprise customers who are replacing costly Unix systems with alternatives, Microsoft has updated its set of tools designed to give Unix users a hand in moving to its Windows operating system. Services for Unix Version 3.0 adds Windows support for Network File System, a Unix file-sharing protocol. Such support lets Windows clients and servers access files and data stored on Unix servers. Services for Unix 3.0 also lets Windows customers use Microsoft's Active Directory server software to manage and interoperate with Unix directories through the Native Information System server. The package now includes Microsoft's Interix software, which can be used by in-house enterprise developers to recompile Unix applications to run on various versions of Windows.