https not secure error in checkout - stock quickstart install

this is my second problem with this template. when i go to checkout in virtuemart, I get a security message in all browsers that says all the content is not encrypted. i cannot have this when a customer is checking out in the store. Is there a fix for this?

stock mystore quickstart
joomla 1.5.22
virtuemart 1.1.5

Thanks

Hi there,

Did you ever get any answer or did you find any fix for this HTTPS problem?
I have the same security pop up message and we losing customers because of this.
We sent 2 messages to them through the support email form about a week ago, but still no response yet....

our site is the same Joomla 1.5.22
Virtuemart 1.1.5

Thanks