MSSQL2005 installation failed at MSXML6

if MSSQL2005 installation failed at MSXML6 part, here's the solution:

1. go to http://support.microsoft.com/kb/290301 and download Windows Installer CleanUp Utility

2. install Windows Installer CleanUp Utility and open Windows Install Clean Up from start menu

3. look for MSXML 6 Service Pack 2 (KB9544590) from the list then click Remove

4. install MSSQL2005 again, and voilà! that should do it!

solution from: http://support.microsoft.com/kb/968749