SQLPrepInstaller of DPM2012 installation using remote SQL server

This Technet link describes the setting up of remote SQL server of Microsoft's latest backup solution - System Center Data Protection Manager (DPM) 2012 SP1.

A missing step is not mentioned for using remote SQL instance (i.e. SQL not installed on same server as DPM). You'll have to run the "SQLPrepInstaller" on the SQL server. Insert the DVD, ISO or file share image of DPM installer on the SQL server. Click on the following menu on the launcher.