Well, well, well. As I mine through the innards of Ubuntu Gutsy, I find that the Synaptic Package Manager supports xfractint version 20.4.00-1, maintained by Riku Voipio in Finland. I installed this through the Manager with partial success. Upon activation, the initial scrolling screen appears in my Terminal and F1 starts up the "help" screens. However, the following screen remains black and any further commands return me to the prompt. My first, abortive, attempt to install xfractint was a manual installation of Scott Boyd's xfrac-binary-20.2.04.gz executable. As far as I know, this is still buried in the innards of my machine and I've no idea of how to clean it all up! (This is something which baffles me about Linux... how to manage an application for which the files are strewn around the four corners of the file system.) The package manager will look after removing Riko Voipio's xfractint for me. Scott Boyd's xfractint page mentions that "Xfractint was updated to Fractint 20.2.04 by Tim Wegner, Jonathan Osuch, and others." So where does Riko Voipio's xfractint version 20.4.00-1 come from? Puzzled JohnW.