How to edit "shopping-cart" page

[Griffins]

Hi,
Joomla version: 2.5
VM version: 2.0.18a
Template: "Creative" Gavick Framework

I want to edit shopping-cart page. I only want to remove the header and footer of website from this page, for this i need to edit this page/php file, i have removed them using firebug but i can't find the file's path.
while i was going through the forum someone said to edit this follow this path

/your_Joomla_path/components/com_virtuemart/
but i dont knw where is that shopping-cart file
last thing
Do i really need to edit php file or there's any other way around?
and i want all this to done in fancybox

[attachment cleanup by admin]

[Pejo]

Try first to remove header and footer as module. You have header and footer as module. You can check there where you would like to see header and footer.