Sims 2 nighltlife vampire/witch help?

I also had very much difficulties trying to find a vampire (I didn't know anything about a witch). Anyways what I did was hang around the town during the night and such. Once I found a vampire I would be very nice to it and eventually fall in love with them. Then I would ask the vampire to move into my house. Once at that point you can control the vampire; you can control the vamp tobite another player in or household or someone in the neighborhood, or have vamp babies! Hope I helped. :)