Just to put the Jesus story into context, it might be useful to look at some of the key milestones of the life of Mithras. Mithras is the Roman god whose worship had dominated Rome for some 600 years preceding Christianity. If we do this, we can see the root stock upon which Constantine grafted Christianity:
1.	Mithra was born on December 25th as an offspring of the Sun. In the catacombs at Rome was preserved a relic of the old Mithraic worship. It was a picture of the infant Mithra seated in the lap of his virgin mother, while on their knees before him were Persian Magi adoring him and offering gifts.
2.	He was considered a great travelling teacher and masters. He had twelve companions as Jesus had twelve disciples.
3.	Mithras also performed miracles. Mithra was called "the good shepherd,” "the way, the truth and the light,” “redeemer,” “savior,” “Messiah." He was identified with both the lion and the lamb.
4.	He was buried in a tomb and after three days he rose again. His resurrection was celebrated every year.
5.	The International Encyclopedia states: "Mithras seems to have owed his prominence to the belief that he was the source of life, and could also redeem the souls of the dead into the better world ... The ceremonies included a sort of baptism to remove sins, anointing, and a sacred meal of bread and water, while a consecrated wine, believed to possess wonderful power, played a prominent part."
6.	The mysteries of Mithras, which fell in the spring equinox [Easter], were famous even among the many Roman festivals. The ceremonies observed in the initiation to these mysteries -- symbolical of the struggle between Ahriman and Ormuzd [the Good and the Evil – Zoroastrian gods] -- were of the most extraordinary and to a certain degree even dangerous character. Baptism and the partaking of a mystical liquid, consisting of flour and water, to be drunk with the utterance of sacred formulas, were among the inauguration acts."
7.	Prof. Franz Cumont, of the University of Ghent, writes: "The sectaries of the Persian god, like the Christians, purified themselves by baptism, received by a species of confirmation the power necessary to combat the spirit of evil; and expected from a Lord's supper salvation of body and soul. Like the latter, they also held Sunday sacred, and celebrated the birth of the Sun on the 25th of December.... 
8.	[Both Jesus and Mithras] preached a categorical system of ethics, regarded asceticism as meritorious and counted among their principal virtues abstinence and continence, renunciation and self-control. Their conceptions of the world and of the destiny of man were similar. They both admitted the existence of a Heaven inhabited by beatified ones, situated in the upper regions, and of a Hell, peopled by demons, situated in the bowels of the earth. They both placed a flood at the beginning of history; they both assigned as the source of their condition, a primitive revelation; they both, finally, believed in the immortality of the soul, in a last judgment, and in a resurrection of the dead, consequent upon a final conflagration of the universe" (The Mysteries of Mithras, pp. 190, 191).
9.	Reverend Charles Biggs stated: "The disciples of Mithra formed an organized church, with a developed hierarchy. They possessed the ideas of Mediation, Atonement, and a Saviour, who is human and yet divine, and not only the idea, but a doctrine of the future life. They had a Eucharist, and a Baptism, and other curious analogies might be pointed out between their system and the church of Christ (The Christian Platonists, p. 240).
McClintock and Strong wrote: "In modern times Christian writers have been induced to look favourably upon the assertion that some of our ecclesiastical usages (e.g., the institution of the Christmas festival) originated in the cultus of Mithraism. Some writers who refuse to accept the Christian religion as of supernatural origin, have even gone so far as to institute a close comparison with the founder of Christianity; and Dupuis and others, going even beyond this, have not hesitated to pronounce the Gospel simply a branch of Mithraism" (Art. "Mithra").
 
http://www.near-death.com/experiences/origen048.html
Thanks for the link on Shelley Yates, Clubs. I'll take a look at it.