[Enosh]

If memory serves, this revolves around the Hebrew word "almah," which can mean virgin and well as maiden or young girl. "Virgin" is more to the point, but a young girl need not be as such to still merit the word.

However, given the context, we Christians will go with the Immaculate Conception.

[kalee]

Did you mean Virgin Birth? The Immaculate Conception is the belief that Mary was herself conceived without original sin.

[Caesar Soze]

However, given the context, we Christians will go with the Immaculate Conception.

The context of Isa 7:14 has nothing to do with the Immaculate Conception. And many Christians do not even believe in the Immaculate Conception.