[Theme: Reddle] How to add Pagination/ disable comments

Hi there!
I’m fairly new to wordpress and my CSS/html-coding experience is basic.
I love the looks of the reddle theme by automatic, even though it was published like to years ago.
I went through all reddle support threads http://en.forums.wordpress.com/tags/reddle/page/3 and couldn’t find my answer.
Please help me!

Problem 1
I want to use WP Page Navi on my blog’s main page – simply because I find the page lenghts is growing to much.
I can’t find the plug in installation thread in reddle. So I don’t know whrere to but in the register code for WP Page Navi.

Problem 2
Reddle allows comments an every single page, not only the blog “front page”. I would like to disable the comments on my impressum. Does anyone know, how to pull that trick? Please note: the comments can’t be switched of the “normal way” going into settings “discussions” oder settings “pages”. There is no box to for disabling comments.

Thank you very much for your help!!
Janini