How do I remove Comment box and Post info

I need the code for minimatica’s single post php.

I accidently deleted the code in an attempt to remove the “written by admin”

So my first problem:

– I need the code to for the single post php

My second problem:

– I need to know how to remove the “written by admin” and all that stuff on the left side of the page when looking at a post.

* Randy