I got alblack's point system from him and modified it slightly-- basic criteria are:
consistency-- cannot qualify if you have not been in the postseason (NT or PIT) 4 of the last 5 seasons.
how far you go in the postseason-- obviously, deeper runs get you more points. essentially, a PIT championship is worth a first round NT exit.
system takes into account the last 10 seasons, but older accomplishments count less.
If anyone wants the whole formula, send me a sitemail and I will be happy to share. Or, if you all want me to post it here, I will be happy to do so and take suggestions (though changing it much is tough, since I have tons of data already entered).