The findings of the so called Troopergate Probe were released recently. The 263 page report can be read at http://media.adn.com/smedia/2008/10/10/16/Branchflowerreport.source.prod_affiliate.7.pdf. The crux of the report findings is that Sarah Palin did abuse her power but did have the legal right to fire Monegan. I have not read the report for lack of time, but Hot Air reports that pages 65-71 give you the important information (http://hotair.com/archives/2008/10/10/troopergate-probe-palin-abused-power-but-had-the-right-to-fire-monegan).
The McCain campaign has said that this whole thing is a political show. At least some of it almost certainly is. The website set up by the McCain campaign to show the political nature of this and the political connections as evidence is http://www.johnmccain.com/palintruthfiles. The video below comes from that website.
Video embedded below.