<SCRIPT LANGUAGE="JavaScript">
  if (window.print)
    { document.write('<form><input type=button name=print value="Print This Page" onClick="window.print()"></form>'); }
</script>

 This is a button.  If you want any other link type, as in an image, just modify the code accordingly.  Something like:

<SCRIPT LANGUAGE="JavaScript">
  if (window.print)
    { document.write('<form><input type=image src=\images\printimage.png onClick="window.print()"></form>'); }
</script>

The key is the JavaScript window.print() function.  Add it to any type of handler, as in the onClick here, and it opens the print dialog to print the page.

Jeff