I am still trying to learn more about how to determine if the computer running my software is using 64-bit OS and/or processor.
I found this code online:

ManagementObjectSearcher mso = new ManagementObjectSearcher("SELECT * FROM Win32_OperatingSystem"); //Win32_ComputerSystem");
ManagementObjectCollection qc = mso.Get();

Console.WriteLine("OSArchitecture: " +
mso["OSArchitecture"].ToString());

According to the docs OSArchitecture should give me the info that I need but the code above does not give me information about OSArchitecture. I think there is something wrong with my select statement. Any information on this topic is welcome.

Thanks,
Einar