Justin Taylor recently posted a helpful chart on Eschatological systems made by Mark Vander Pol.  The chart (a pdf file) gives a graphical representation of Classic Dispensationalism, Historic Premillennialism, Postmillennialism and Amillennialism.  It should be noted that the representation of Dispensationalism goes further in certain areas than many dispensationalists might (e.g., the Roman Empire is reborn as the E.U.), but the overviews are generally helpful.

If you’d like to do further reading on eschatology, a very helpful book that uses charts to help describe the different views is Understanding End Times Prophecy by Paul Benware.