cannot instal it. Error: The installation package could not be opened. Contact the application vendor to verify that this is a valid windows installer package.
Do i have to uninstal other things first??
You have to uninstall previous versions of Silverlight 2.0 with SKD's before installing this. If it still doesn´t work, try to download it again, or try visit a page that uses Silverlight 2.0, so you can install it directly.