Die Hard Trilogy doesn't work with my emulator, please help

I downloaded die hard trilgoy for the PS1, but when it finally downloaded it didn't work with my emulator, i don't understand why, is it anything to do with me being PAL and the download being NTSC, any help would be appreciated.

Region doesn't matter with emulators-though having more than one bios can be useful.WHat emulator is it? (and version)How are you running the iso/game (virtual driver-built in reader, etc...)