[Plugin: SEO Facebook Comment] FB comments only on selected posts?

is there a way, how to integrate facebook comments only to posts i want? i´ve tried several fb comments plugins, but all of them put comments on every page and post on my site, which is really useless for me, because i simply dont want it that way.
another question: somehow, this plugin only works for me when i allow default wordpress comments – but when i “untick” them, facebook comments also disappear. any advice? thank you!

http://ww.wp.xz.cn/extend/plugins/seo-facebook-comments/