I have built my portfolio using pages so I have a portfolio_holder and each item in it is stored as a page portfolio_page. So in my portfolo holder I have got this:

<% control ReverseChildren %>
<div id="port_box">
<span>$portImage</span>
<span class="port_type">
<span class="port_title_type">Client:</span> $Client</span>
<span class="port_type"><span class="port_title_type">Role:</span> $Role</span>
<span class="port_type"><span class="port_title_type">Project:</span> $Task</span>
<% if Content %><span class="port_type"><span class="port_title_type">Summary:</span> $Content</span><% end_if %>
</div>

<% end_control %>

So this is basicly getting all the data form inside or the portfolio page and showing it. However I am wanting to start using showcases and being a bit more indepth with some of my items So i would like to be able to click on $portimage and got to the actual Portfolio_page. How could I do this?

You can use $Link inside that control to get the links for the pages.