Many of my readers are United Methodist, so I'd like to bring up this passage from the Articles of Religion of the Methodist Episcopal Church, which are permanently and forever protected from change by the First Restrictive Rule:
Article II -- Of the Word, or Son of God, Who Was Made Very Man
The Son, who is the Word of the Father, the very and eternal God, of one
substance with the Father, took man's nature in the womb of the blessed Virgin;
so that two whole and perfect natures, that is to say, the Godhead and Manhood,
were joined together in one person, never to be divided; whereof is one Christ,
very God and very Man, who truly suffered, was crucified, dead, and buried, to
reconcile his Father to us, and to be a sacrifice, not only for original guilt,
but also for actual sins of men.
Article III -- Of the Resurrection of Christ
Christ did truly rise again from the dead, and took again his body, with
all things appertaining to the perfection of man's nature, wherewith he ascended
into heaven, and there sittith until he return to judge all men at the last
Therefore one cannot deny the virgin birth or resurrection of Christ and be faithful to the core doctrinal standards of the United Methodist Church.
UPDATE: I would like to add that I find these doctrinal standards very reassuring. Other denominations might struggle with theological unity, but thanks to these clearly-written statements in The Book of Discipline, that just isn't a problem in the United Methodist Church.
SECOND UPDATE: Handy links on the Virgin Birth by Dale Tedder.