After reading these comments, I am walking round with a massive smile on my face

Thanks one and all!

To receive such high praise from such skilled people really does mean a lot.
I think I will take Sue's suggestion and maybe crop a little off the bottom though. After that, I'll hopefully get it printed.
A few people asked how it was done - it was a pretty basic setup, but it worked out pretty well
Tripod, with the D50 and Sigma 10-20 attached. Tried to compose the scene, but it was mostly guesswork, being so dark. Set the body to manual focus, and just set the lens to infinite.
Set the camera to manual...lens wide open at F4, and then just quite a few different shutter lengths. The D50 only goes up to 30 seconds though, so they were Bulb captures...that was the hard bit.
I don't have a remote or a cable release or anything like that...so I'd press the shutter release button, stand bloody still, and then let the button go after what seemed like a good amount of time,all the time holding my finger on the release.
The camera did its noise reduction thing for a while...and then I'd do the next one, with each one longer than the last, just to see the differences.
The RAW file was worked on a bit in CS2 to bring out the detail and colour a bit, and that's about it.