Hello, I was wondering how do you change the colors of borders for a certain skin in the style.css file. Is that even the right file to edit?

I am also trying to change the spacing between links in the navigation bar.

I am not familiar with CSS at all, so I really don't know what to do. Even reading the guides on the site confuses me a bit.

One thing you can do is look at the image files in the directory of your skin. You can usually tell how the page is using these files simply by looking at them and noticing the colors. I used a skin from MojoPortal and just changed the colors in these image files to the colors I wanted.  Also, you can browse the css files using Visual Studio.  If you place your mouse cursor inside the definition of the class (inside the brackets "{" ) and click the Build Style button on the Visual Studio toolbar, you can tell what image or background color that class is using.  Also, when you examine a webpage look at the source for the page.  In Internet Explorer under the View menu there is a View Source menu item.  Looking at the source will tell you what class each section of the page is using then you can search for this class in the css files.