If you are already stuck with ART files and want to convert them to a more useful format, see the article I have files in ART format. How do I convert them to JPEG?
Of course, the ability to save JPEG, PNG and GIF images does not mean you can legally use other people's copyrighted work in your own web page. Unless you have obtained the permission of the author, you may not use their graphics on your own site.
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