It is very simple plugin. Comments and comment form is triggered in K2 comments place. There is also comments counter on category page under each item and counter with link to comments in item's toolbar.
Plugin comes with two language files: polish and english.
Plugin works also in Joomla 1.7.5
Feel free to ask questions in comments on extension's download page.
A quick Google found this smple plugin that does everything I needed and simply replaces the K2 comment system with just an install. Had my comment system replaced and working within 5 minutes.
Works and fits with my site perfectly and only had to change up one tiny thing. Excellent work!
All I had to do was install, set the module to a position and pages and then get a Disqus API key for my site.
Otherwise, it style looks great without any effort.
The level of difficulty here is very low and I'm a relatively new user when it comes to Joomla! Thanks so much for this great tool!