Portfolio Grid: Lightbox with multiple images? Or "mix" of Ajax and lightbox?

Hi,

I’m using the portfolio grid to display 10 portfolio items. Each portfolio item has 5-6 preview images assigned. When I choose “ajax” portfolio, of course those preview images work fine. However, I prefer working with the lightbox view. So, I’d like that lightbox to be able to go to the previous or next preview image. Is this possible?

In other words: I’d like to have the ajax portfolio to open in a lightbox instead of above the portfolio grid. And (if possible), with “previous” and “next” buttons in the lightbox, instead of the “ajax thumbnails”.

I’m not fixed on the “portfolio grid” element, so don’t mind working with a different portfolio option, or maybe a plugin?

Thanks a lot