The actual process is;
Install SQL Server 2k8R2 or 2k14 for a Server or POS stations that will use the Offline function
Install the Backward Compatibility mentioned below for each machine that will run RMS.
Configure the SQL Server with Named Pipes and TCP/IP, Named Pipes ordered first
I have previously written posts on how to do this, both a new install or an upgrade, search for it.
Install RMS 2.0, be careful not to install SQL from here as it will install SQL 2k5
Install CU5
Install the latest hotfix, currently 2.0.2022
Run Windows Update as there will be updates