BACKUPS

I have the following backups in two seperate folders:
Railworks3Backup/RW_Backup1
and
Train Simulator 2012/Disks 1, 2, 3 &4/ each disk contains the following "Train Simulator 2012_disk1_0.sid" (or disk 2, 3 or 4)
How do I restore them to the original?
TIA
Regards,
Fred
Railworks3Backup/RW_Backup1
and
Train Simulator 2012/Disks 1, 2, 3 &4/ each disk contains the following "Train Simulator 2012_disk1_0.sid" (or disk 2, 3 or 4)
How do I restore them to the original?
TIA
Regards,
Fred