Zen cart tweaks

Estimated duration: asap
Description: my site www.print-my-designs.co.uk
i need the following doing

1. i have an error when trying to download my product when purchased from store - Firefox can't find the file at http://www.print-my-designs.co.uk/index.php?main_page=download&order=1&id=1. - this needs fixing and the process of payment and checkout and download needs testing (downloading can be tested with free products and payment can be done in sandbox mode or live mode and will refund payment made for items)

2. Special, all products and featured layouts to be identical to the new products

3. special, all products, featured and new listing all to have light grey backgrounds and when mouse over the image is pops up with a larger image similar to the following link http://www.card-making-downloads.com/ (this is not on the product details page as this already has something ideal)

4. all products section to show layout similar to "new products" with boxes and light grey background as mentioned above

most of these are just quick tweaks in settings and shouldn't take long to complete

work to start and be completed asap please don't delay in your bid