Thank you for such a quick reply! I got the extension successfully registered.
Is this how I run the function in a template?:
HTML Code:
{vb:data wp, wpHeaderFooter_Api_Options, wpHeader}
(not sure about the varname "wp") - I put this in but nothing shows up in the header template.
Also, do I need to register this as a product in the AdminCP import/add product page for this to work, or is just registering the extension good enough?
Thanks again!