I have now had a look at the Nextgen plugin, but I see that it uses Flash. Flash is bad news as far as I am concerned at the moment. The reason being that rotating images that use Flash do not work properly on IE 64 bit operating systems. Apparently Adobe still haven't brought out a version that works on the IE 64 bit system, even though they have known of the problem since Vista came out.
See
http://kb2.adobe.com/cps/000/6b3af6c9.html for Adobe's explanation.
As 62% of my site visitors use IE I cannot risk using a rotating image plugin that either leaves a blank box or a list of thumbnails in place of rotating photos just because they happen to be using a 64 bit system.
Any other ideas please?