232748 oscommerce/zencart customised

I have a vanilla oscommerce install (can change to zen cart if necessary) and i need to integrate some extra code that will allow us to customise products through an image editor, then upload it to the site. This customisation can be applied to every product added/bought through the store so this also needs to be added. You can see an example of the code working on a similar site here - the store - [login to view URL] The customising area happens when you click a size of stamp, then click on customise, here is a link to it so you can see it - [login to view URL];h=236&image=30x30.jpg&f=3&products_id=16&file=3030PR01.xml&mode=0 I have purchased the complete source of the customising side, and need it integrating into a vanilla osc (preferred) or zencart site. The finished site will be in Portuguese as from what i can see there is more support for that on osc hence my preference to use that (i am also more famaliar with osc). Essentially, you pass the customier some variables in the GET string that describe size of stamp and a background template and whether it is a new stamp or re-editing an existing. The designer then saves an xml data file that contains font size, location, colour and image info to be parsed later.