Delete Product from Cart Icon

[bmw2182]

I'm using Joomla 2.5.14 Virtuemart 2.0.26d and I'm trying to change the image to delete from cart.   I have tried changing - components/com_virtuemart/assets/images/vmgeneral/remove_from_cart.png to a new image, but it doesn't change it.  What file do I need to change in order for the cart to show a new remove icon? 

[lanthan]

/com_virtuemart/assets/images/vm2-sprite.png

It is a sprite with mutliple icons in it.

[bmw2182]

Thank you!!!!