Read this first before mucking with any theme’s files:
http://codex.ww.wp.xz.cn/Child_Themes
We really, really recommend using a child theme. That way your customizations won’t be overwritten when the parent theme gets updated.
Then make a copy of the stylesheet (style.css) and move it to a directory for your child theme. Then open them up in a code/text editor and start editing, making sure to include the important child-theme parts needed at the top of the stylesheet.
(@bemdesign, I share your enthusiasm for child themes. However by my reading I am not sure that @knight39 has organised his hosting yet.)
@knight39, suggest that you start with the “Getting Started Resources” docs on this page:
http://ww.wp.xz.cn/support
And by all means keep asking questions.