no idea but vampiric clown is right about takin' the piss. ask roderic usher, mothman, pr3ssur3 or bloodrayne

I've never actually seen it but you may want to look into Cannibal Girls.

Several movies have used the warning gimmick but it is the one that seems most like it could be it. I know When the Screaming Stops used the gimmick on VHS but I don't think the theatrical prints had it.

Or Zwoti if he's around.

i think i remeber that its the one with the hole in the back yard with little creatures i think the guy who plad the siencientist in star gate was in it

The clues posted are pretty vague, but if its an italian movie with murdering zombies, I think it might be this one :-

Let Sleeping Corpses Lie

You better check it out and post back.