if you go to lumenoks website, there is some FAQ's that help with the not lighting problems. Easton makes a lighted nock I think it's the Tracernock, I've heard good things about these but haven't shot them myself yet.
If the basic criteria for a vampire is a living entity that sucks the life out of you in order to sustain itself, then I know a few. They tend to hide out in Washington, DC.
Don't miss the new epidsodes of ARCHERS CHOICE. Mondays at 10:00am, Tuesday at 6:00 am and Sundays at 12:00 est!!