Moved from:
https://www-secure.symantec.com/connect/forums/netbackup-75-restore-policy-type-problem
Please provide a little more info on your environment & any specific issues you may be having.
Have you gone through any documentation?
e.g.
http://www.symantec.com/business/support/index?page=content&id=DOC5146
& the rest (for NB7.5):
http://www.symantec.com/business/support/index?page=content&id=DOC5138
