Use hostcore its better then the one mentioned above.
It allows you to play homebrew, watch movies and play your backups and the best part is it is a pluggin so you will view your games in the xmb like you would with your memory card and you can use it with usb of wifi.
And you can get help using it without mentioning iso just ask how to use hostcore for homebrew and you will get help getting it running.
But if you ask how to get it running to run backups you will be told site rules dont allow helping with running backups. lol
anyways enjoy which ever program you choose
peace out hommie