Auto updating product script

I need an auto updating product script which would pull product info from my opencart shop and export it into XML template. If someone is willing to do it i`m pretty sure we will agree on the price. Here is XML template example:

<?xml version="1.0" encoding="utf-8" ?>
<root>
<item>
<name>Nokia 6120</name>
<link>http://www.shop-name.lv/info/Nokia6120/</link>
<price>150.55</price>
<image>http://www.shop-name.lv/images/Nokia6120.jpg</image>
<category_full>Mobilie telefoni >> Nokia</category_full>
<category_link>http://www.shop-name.lv/nokia</category_link>
<manufacturer>Nokia</manufacturer>
<model>6120</model>
<in_stock>7</in_stock>
</item>
<item>
...
</item>
</root>