There is no chechout box

[johnnyboy_31]

Hi,

I just installed VM 2.0 on Joomla 1.5.21

Most things seem to work, however there is no checkout box, or when I press "add to cart" nothing happens.

Should I enable something in the configuration to see a checkout button?

http://www.sequoiabomen.nl/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=1&virtuemart_category_id=0&Itemid=83&lang=nl

Thanks,

John