VitrueMart shop setup and finetuning

We are running a web shop at [login to view URL] The setup of the shop is almost complete but there are still 2 outstanding tasks that needs completing: 1) technical issue once we get past the category listing page: 'Fatal error: Cannot redeclare class HTML_Common in /home/londonbu/public_html/visibuzz/administrator/components/com_docman/contrib/pear/[login to view URL] on line 29'. This has to be sorted out. 2) we have to import roughly 250 products description + stock level + product images. The import will be based on an existing XLS file + 250 PNG files. PLEASE DO NOT RESPOND IF YOU DON'T HAVE An IN-DEPTH KNWOLEDGE OF VIRTUEMART. Please list at least 2 urls of public websites where you have personally implemented Virtuemart.