- Windows 2000 SP3
- Windows 2000 SP4
- Windows XP (without SP)
- Windows XP SP1
- Windows Server 2003
Windows Server 2003 SP1 will include MSI 3.1.
The build number of the redistributable version is 3.0.3790.2538, which is slightly higher than the version that comes with XP SP2 (3.0.3790.2180).
The file name is WindowsInstaller-KB884016-x86.exe, following Microsoft's new naming convention to include a reference to a KB article.
Information about this release and the issues that are addressed in MSI 3.0 can be found in knowledge base article 884016
Download the Windows Installer 3.0 Redistributable
The download page has a language selection box, but the exe file appears to be identical for all languages.