Since this older thread has been resurrected, I thought to add something regarding dispensationalism that we've discussed on another Christian forum I'm on in some length. Amillennialists purport that dispensationalism wasn't around before it was popularized in the 1800s. This is not the case. The idea can be found in many early church writers including Justin Martyr, Irenaeus and to a degree Augustine. But it seems that after the RCC firmly took over much of the church, amillennialism was the basic theme for over a thousand years.
See here:
Dispensationalism And The Early Church Fathers