Thank you for getting back to me.
I have followed your instructions
When following link to admin area I can see all images in chosen gallery as thumbnail grid.
Add to site code is
$pg_id = '3';
$pg_theme = 'dark';
I have inserted the **
I have made new gallery 3 by adding the image folder. This did result in 41 new images being added.
The code above relates to this...as gallery 3.
When I view the webpage link above in IE8 browser I do still get just the dark template for Power Gallery.
Hope this helps