Both following templates doesn't change you to undead, however some turning undead might give you penalties.
Katane (template)
from Dragon #313 p. 62
Cursed with a thirst for living blood and possessed of awful powers befitting creatures of the night, katanes are some of the more common half-undead. The human-like appearance and social behavior of vampires and their spawn result in ample opportunities for half-breed creation, and some vampires retain enough human sentiment to care for the child, improving the katane's chances of survival.
Katanes are pale and slender, with jet-black hair and red, black, green, or yellow eyes. They have pronounced canines that extend for feeding and slightly pointed ears. Some of the less fortunate (those with a Charisma score of 7 or below) have batlike features.
Half vampire(template)
from Libris Mortis p. 106
In rare circumstances, a vampire that has recently consumed a
significant quantity of blood gains the ability to breed successfully
with living humanoids or monstrous humanoids, creating half-vampire
offspring. Also, in the unusual case of a pregnant humanoid or
monstrous humanoid who survives a vampire's blood drain attack, the
child may be born "tainted" by the attacker's vampirism. Regardless of
the origin, the children produced by such events are typically branded
as outcasts, welcome neither among the living or the undead. A
half-vampire is drawn to other living creatures, and feels far more
comfortable when living in towns or cities. Still, half-vampires know
that they must keep their identities secret or else risk the hatred
and violence of others.
Half-vampires are often physically attractive and persuasive. Their
skin is pale, even ashen in color.
Unlike their undead forebears, half-vampires enjoy the freedom (or
curse) of pursuing any alignment, though most tend toward neutrality
or evil. Those rare few good-aligned half-vampires often feel haunted
by their heritage, sometimes working to undo the evil of their
ancestry.
