Add or Remove Programs entry for Subsystem for UNIX-based Applications (SUA) utilities. UNIX Interoperability components in Windows Server 2003 R2 allow you to reduce costs by integrating UNIX and Microsoft Windows systems to deliver a complete solution. The interoperability of security and directory services, file and printer sharing, and re-use of UNIX code and IT skills across platforms delivers a simplified infrastructure and allows UNIX or Windows IT staff to manage both systems from one place.