RentMaster requires the Microsoft Soap Toolkit 2.0 to have been installed.  This is pre-installed in all newer versions of windows.  If you get an error using RentMaster when trying to update the FindARentalHome web site, which says these files are missing, then download the following file and run it to install these files.

Download SoapToolkit20.exe here.

After installation, you can then run RentMaster again, and update the FindARentalHome web site.

This is a Microsoft installation.  This file can also be downloaded from the Microsoft web site directly by going to this location and doing a search for "SOAP 2.0"