I have seen certain people using codes that sort of look like this:

<MAP>
<AREA SHAPE="RECT" COORDS="#,#,#,#">
<AREA SHAPE="RECT" COORDS="#,#,#,#">
<AREA SHAPE="RECT" COORDS="#,#,#,#">
<AREA SHAPE="RECT" COORDS="#,#,#,#">
</MAP>

and I know what they do, but how do you find the coordinates of a certain area?

It's called an image map (http://www.lissaexplains.com/forum//search.php?s=&action=showresults&searchid=57304&sortby=lastpost&sortorder=descending), most people use a program (cutemap, psp) to map the coordinates.

I was just about to post saying that I found the answer to my problem by searching around but thanks anyways! Much appreciated!