Dear All, With a heavy heart and a thousand apologies, another URL correction Now: http://www.mrc-cbu.cam.ac.uk/Imaging/External/mnispace.html Does NOT work (amusingly enough) but the original URL in my first post: http://www.mrc-cbu.cam.ac.uk/Imaging/mnispace.html DOES. At the moment. How embarrassing is that? I would be very grateful if anyone that is having difficulty accessing these pages would contact our eminence grise of the website, Iain Morrison ([log in to unmask]) Sorry again, thanks for your patience, Matthew %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%