Hi!

You need a software tool like "Avis Fits Viewer" or "LTImage" to view FITS files.

You can download these tools here:
http://www.sky-watch.org/fits/avisfv.zip

and here:
http://www.sky-watch.org/fits/ltimage.zip

The following link shows some guidlines for downloading and displaying this image data:
http://www.schoolsobservatory.org.uk/skywatch/disphelp.htm

All the best,
the SkyWatch team