Some programs you may have might already allow you to set the Transparent background color, but not knowing what program its hard to tell you how to do it. You can check the help file and it should tell you how to set the transparent color when saving as a GIF file. Transparent colors don't work for BMP or JPG files, just GIF and the newer PNG formats.
If you want you can email me the file and I'd be happy to do it and email it right back.
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