"Nazi Zombies Portable" recreates "Nazi Zombies" game mode on the PSP.
Nazi Zombies Portable Dynamic Theme for PS3. This is for the PlayStation 3, not the PlayStation Portable.
Place nzp.p3t into your usb drive, like so: [USB]/PS3/THEME/nzp.p3t
Then connect your usb device to your ps3, and go the the theme section on the xmb. Go into it and press X on 'Theme' and then choose install. Select your usb device and then choose the theme to copy.