A new version of the Linux Additions for Virtual Server is now available from the Microsoft Download Center via the following webpage:

http://www.microsoft.com/technet/virtualserver/downloads/linuxguestsupport.mspx

These new Additions add support for some updated distributions of Linux (details on the webpage above) and are designed to work with Virtual Server 2005 R2 SP1 which is available at http://www.microsoft.com/windowsserversystem/virtualserver