At Torstein's suggestion - here's a link to my portfolio website. I've customised the .png graphics that comprise the popup frames to have a chiselled black/grey look, and echoed that throughout the site.
I've also 'nested' highslide popups so that clicking on a project eg 'Monopoly' popups a mini-portfolio highslide window with html content - clicking again opens a large highslide version of the thumbnail.
I'm a non-web graphic designer with only passing knowledge of html so have got this far with 'copy-and-paste' using Torsteins samples as a starting point.
I suspect you could drive a bus through the way I've put it together from a technical point of view - I really ought to try and disable the left-right arrow keys for instance. But hey - if it looks right - it is right - right?
Am currently embarking on a freelance/contract graphic design career so any work offers much appreciated.