To run the RHS Toolbox, you either need a functioning copy of Microsoft Access 2010 or higher version or a copy of the runtime version of Access.
Access runtime software are available from the Microsoft website at the following addresses:
Install the software and double-click on the RHSDataInput.accdr file to start the application
The RHS Toolbox was designed for Windows7-10. Any PC capable of running Access should be able to run the application.