I have already installed backupmenu v0.56-1 from the application manager. Do I have to uninstall that version & install your modified version?

Also I do not have multiboot & NITDroid installed but intend to install it without loosing backupmenu. What steps should I follow? Do I have to install multiboot & NITDroid before using your files?

Sirry if my questions sound like a noob...