Before RH(+) IDE installation, you must setup .net framework 2.0. Current active link for .net framework 2.0 is "http://www.microsoft.com/downloads/details.aspx?FamilyID=0856eacb-4362-4b0d-8edd-aab15c5e04f5&displaylang=en" at the time of writing this README.txt. You can download latest version from http://www.microsoft.com/downloads. Follow the link ".NET Framework Version 2.0 Redistributable Package (x86)" to download .net framework 2.0. You can check if you installed .net framework 2.0 successfully from Add/Remove Programs List. You must see the entry with name "Micorsoft .Net Framework 2.0". 

After .net framework 2.0 installation, to install RH(+) IDE, use RH(+) IDE.msi. setup.exe will be used in this installation. All of them must be in the same directory.
