Xdeliveryaddress
Setting this to Yes allows the customer to specify a delivery address and time on a product by product basis.
Xdeliveryrequired
Setting this to Yes means customer must provide a delivery address
Xdeliveryshipping
Setting this to Yes means VPCART will calculate shipping on a product by product basis (if xdeliveryaddress is set to Yes as well).
Xproductstayonpage
Setting this to Yes means the customer will remain on the product page when they click the Order button, rather than being sent to the cart display page.
Note : In VPCART 8.00, the product listing page (shopdisplayproducts.asp) is showing no order button now,
only 
button to go product details page.
So
you will find this config no longer works.
In VPCART 8.00
product listing page , default template is using
tmp_productformat.htm which will not show the order
button.
If you want this
configxproductstayonpage to work, make sure you set both config
xproductdisplaytemplate and
xproductdisplaytemplateinventXproductstayonpagevalue to
:tmp_productformat_order.htm
Xcartstaticquantity
Setting this to Yes means that the customer cannot alter the quantity after the item is added to the cart.
Xbuttonremove
If you want a button to appear, rather than the standard checkbox, enter the URL of the image to use as the button.
For example: Images/vpnav_remove.gif
Xwishlist
Setting this to Yes will generates a hyperlink that allows the customer to save the products currently in the cart into a wish list.
Xcontinueshopping
If you want the customer to be sent to a particular page after adding an item to the cart, enter the filename or URL here.
Xcontinueshoppingdynamic
If this is set to Yes, VPCART will try to determine the exact page where the customer came from and return to that page.
Xcartimage
Setting this to Yes will display the image of the product in the cart.
xcustomerimages
Setting this to Yes will mean customers are able to upload images to go along with the product they have ordered, if that product has the “Customer Images” flag enabled.