Some printers have a "mirror" or "t-shirt transfer" printing option built
into their printer driver... in Word, try clicking on File | Print |
Properties, and see if that option exists for your printer. If you have
Adobe Acrobat (the full version, not just the free reader), then the Acrobat
PDFWriter printer driver has this option, so you can make a mirror-image PDF
file and print that onto your transfer paper.
If you're trying to mirror text, see
http://www.gmayor.com/rotate_text.htm
or
http://www.word.mvps.org/FAQs/DrwGrphcs/UpsideDownText.htm .
If you're trying to mirror an image (like a photo or a drawing), format the
image as "float over text" (Word 97) or with a text wrapping style other than
"inline with text" (Word 2000-2003), and then flip the image using the
commands from the Drawing toolbar.