HALP-- Adding comments on Tumblr?

IDK how to do it guys.

demented-extras.tumblr.com/

I'm not sure if it's because of my layout but the disquis add-on won't work.

*is a such a noob on tumblr*

I'm trying to add comments for my Demented Blog but the HTML is so weird I can't figure it out ... Maybe I need a new layout/theme but I worked so hard to get the one I have right now to look the way I want it to. :C

So yeah, if you want to help PM me or something and tell me 'STEP-BY-STEP' on what to do.

Hell, I'll let you take over the blog to set it up for me.
I'm just tired of having to pull my hair over this. -___-;;;