Where you are ready to take the backup you need to:
1. open command prompt (admin)
2. path yourself to the folder where you have the batch file.
CD (path)
3. enter PRaybackup
then supply the PostureRay SA password  PO$tureco
4. Once it exits you can look at the outPRBU.txt to see what happened
5. Copy the .bak file to your other server


The .bak will be in this folder below 
It will be in the MSSQL11.SQLEXPRESS\MSSQL\Backup folder
On my test computer it is a 64 bit SQL SERVER so it is located in C:\Program Files\Microsoft SQL Server\MSSQL11.SQLEXPRESS\MSSQL\Backup

You need to copy the .bak to the new computer in the same location
 

Remember that the output .txt file will be located where the Batch files were installed in that folder once you execute them  one for Praybackup and one for PRayrerstore