Microsoft Plus!

Microsoft Plus! is an expansion pack for the Microsoft Windows 95, 98, and XP operating systems, being released on August 24, 1995, June 25, 1998, and October 25, 2001 respectively, the same dates as each operating system was released, adding new features such as games, themes, and screensavers.

Microsoft Plus! for Windows Nashville
This is the Internet Explorer 4.00 Desktop Update.