The Microsoft .NET Framework 3.5 SP1 must be installed on your computer before you can install ProductShortName]. Microsoft ...

The Microsoft .NET Framework 3.5 SP1 must be installed on your computer before you can install [ProductShortName].
Microsoft .NET Framework 3.5 SP1 is available at:
http://go.microsoft.com/fwlink/?LinkID=179240 .
After installing .NET Framework 3.5 SP1, restart the computer if required, and then install [ProductShortName].