For a somewhat thorough overview of the establishment principle (from a church which actively supports it), see the following series from the Free Presbyterian Church of Scotland:

The Establishment Principle

Part 1: http://www.fpchurch.org.uk/Magazines...l/article3.php

Part 2: http://www.fpchurch.org.uk/Magazines...y/article4.php

part 3: http://www.fpchurch.org.uk/Magazines...e/article4.php

Needless to say, it is often closely linked with a post-millenial eschatological view, though much of it could be affirmed by those of an amillenial view as well.

Blessings,

Jie-Huli

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Jie-Huli
Metropolitan Tabernacle Church
London, England