Microsoft Knowledge Base Article 820101 contains the following summary:

This article contains answers to frequently asked questions about the Microsoft virtual machine (VM) and Windows 2000 Service Pack 4 (SP4). The Microsoft VM provides support for running Java programs. For additional information about the Microsoft VM, visit the following Microsoft Web site:

http://www.microsoft.com/java/

For additional information about Windows 2000 SP4, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack