I made a file called basic.css which has the CSS codes in it, so I just need to put this code:
<LINK HREF="basic.css" REL="stylesheet" TYPE="text/css">
In all the pages to show the CSS. The code in the basic.css is below:

<style type="text/css">

body
{ background-color : #EDCDFD;
font-family : Tahoma, Verdana;
background-repeat: repeat-y;
font-color : #D4700E;
font-weight : 250;
font-size : 8pt;

scrollbar-arrow-color: white;
scrollbar-base-color: black;
scrollbar-dark-shadow-color: white;
scrollbar-track-color: #8E8CF6;
scrollbar-face-color: #9724F8;
scrollbar-shadow-color: white;
scrollbar-highlight-color: silver;
scrollbar-3d-light-color: white;


td
{font-family : Tahoma, Verdana; font-size : 8pt; color: #BB3BFD}


</style>

My problem is, I have added the LINK HREF code in my pages, but the CSS won't show up. Anyone know how to fix this?

take out the STYLE tag set. the css page just needs the middle coding part only.

you also seem to be missing the ending } for your body information area.

please, for future help postings, use a descriptive topic such as "external codes not showing up" instead of just "please help". thanks.