[PhilJ]

In General Settings, enable 'Parse Smarty tags in the content of embedded static pages'

Add this script to your static page...

{literal}
<script language="javascript" type="text/javascript">
<!--
var win=null;
function NewWindow(mypage,myname,w,h,scroll,pos){
if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}
else if((pos!="center" && pos!="random") || pos==null){LeftPosition=0;TopPosition=20}
settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
win=window.open(mypage,myname,settings);}
// -->
</script>
{/literal}

Then add a link...

<a href="http://www.vwspeedshop.com/pg/Engine%20Calculator" onclick="NewWindow(this.href,'mywin','600','600','no','center');return false" onfocus="this.blur()">Engine Calculator</a>

Should do the job