all of you seem to be asking the very same question. where do u find vampires? I am going to tell you now so don't ask again!!
there are 3 ways in getting a vamire. here is one of then.
1. go to a park or something at night.
2. go to the vampire (if he or she is there) and talk.
3. get a good relationship and get the vampire to move in or get married.
4. click the vampire and go to the opiton bite neck.
ok here is the second way.
1. make a sims with the turn ons vampirisem and formal. (turns offs don't matter.)
2. talk to the matchmaker at night and pay top price. mabie a little lower if your feeling luckey.
3. a vampire should fall from the sky. and yeah get a relationship etc etc.
here is the third way.
1. on the nabourhood sccreen, type in the cheat boolProp testingCheatsEnabled true
2. go to the house u want a vampire in.
3. hold shift and click the sim. you will have heaps more options.
4. go swarn and get a sim modder
5. the sim modder is a baby for some reason. click on it and go to the option vampire. you can figure it out now.
he is the forth way.
1. put in the cheat I mentioned in the third way.
2. find a vampire.
3. make the vampire at least a friend,
4. hold shift and click the vampire. it should say make selectable.
5. use the vampire and go to bite neck.
this cheat is very fun to use.. but your sistem can crash if you use too many funtions. so save every now and then. here is another thing with the cheat.
1. out in the cheat on the nabourhood screen.
2. go into make a character and push shift + N
3. it will say going into debug. thats good.
4. u should have lots of new stuff. alien skin, white skin, even the grim reaper hood. llama heads, cow heads, skeliton body, no body at all. have fun with it.