Well, that's a very vague way of saying that yes you also ensured that the WMP9 codec was selected and installed as part of the SH3 installation process.
Read
http://www.microsoft.com/windows/win...vice/0073.mspx . It should solve your problem.
The other alternative is to view the further details at the Microsoft web page like the error message suggests (although it may only lead you to the above page).