Marketpress ECommerce Tracking Help

Hey guys

I have read all of the previous threads on setting up ecommerce tracking in Google Analytics however am still having problems getting it setup.

I am running Marketpress on one of my child sites of a Multisite installation and have a different Google analytics account for each site on the Multisite.

Here is what I have done so far:
- Set Google Analytics Ecommerce Tracking to Asynchronous Tracking in Marketpress.
- Added the provided Analytics tracking code to the Footer of the site & checked that it is showing up correctly:
<script type="text/javascript">

var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-MYANAYALYTICSCODE-1']);
_gaq.push(['_trackPageview']);

(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();

</script>
- Set E-Commerce tracking to 'Yes Is An E-Commerce Site' in Google

When I go into the Google Analytics the traffics, pageviews, etc is working however there is nothing in the e-commerce section.

Am I supposed to add some custom code to show the individual product SKU, price, titles, order numbers etc and confirmation URL to track when an order is processed?

I am currently using Paypal Express Checkout and would love some help so I can track my conversions in Analytics