FoxyCart and MODx Configuration

Please visit fourpawsbakery dot com to view site. I have created an XHTML site where I have integrated the FoxyCart shopping cart. I would like to integrate MODx to handle tracking the inventory of the items I sell. My main objective in using MODx is to ensure the site doesn't sell more of what I have in inventory. There is information about FoxyCart and MODx here: [login to view URL] MODx has already been installed on my hosting account. The template variables need to be configured and the code added to one of the XHTML pages for the items. I can add the code to other pages if I can copy the style. Please send me a message if you have any questions regarding this project. Thanks!