I setup a demo site. It just has Theme, WP e-Commerce and Meteor. I inserted the slideshow in the header with PHP code, it works fine. The problem is that it kills the lightbox that comes with the theme. It also kills the popular JQuery Colorbox by Arne Franken if I activate that for images. I fact it stops several lighbox plugins working. I have not been able to get any to work when Meteor is active.
Any hints? Happy to supply a login for this demo site.
You can see page with image that should open in a lightbox here