You have to use an image map .... it takes a but of playing around, but
you'll get it eventually
E.G.
<!-- Image mapping co-ordinates go here -->
<MAP NAME="imageMapName">
<AREA SHAPE="RECT" COORDS="0, 0, 160, 60"
HREF="
http://www.site.com/page1.html">
<AREA SHAPE="RECT" COORDS="160, 0, 310, 60"
HREF="
http://www.site.com/page2.html">
<AREA SHAPE="RECT" COORDS="310, 0, 410, 60"
HREF="
http://www.site.com/page3.html">
<AREA SHAPE="RECT" COORDS="0, 60, 160, 110"
HREF="
http://www.site.com/page4.html">
<AREA SHAPE="RECT" COORDS="160, 60, 310, 110"
HREF="
http://www.site.com/page5.html">
<AREA SHAPE="RECT" COORDS="310, 60, 410, 110"
HREF="
http://www.site.com/page6.html">
</MAP>
<!--image goes here .... notes usemap attribute -->
<img src="/images/image.gif" width="410" height="110" border="0"
align="middle" usemap="#imageMapName">