Run 32 bit .NET applications on 64 bit machines

Open up command prompt and type this command

C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Ldr64.exe SetWow

Now you should be able to run apps that use only the .NET 32 bit CLR.

To revert back to the default 64 bit framework run

C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Ldr64.exe Set64