I'd suggest you use single quotes for the Kix string definitions and the double-quotes for the HTML.

 Code:
If $DiskFree < $Min $Color = 'red' Else $Color = 'green' EndIf
$Rc = WriteLine(3, '{td}{font size="3" color="' + $Color + '"}' + $DiskFree + '{/font}{/td}')


Note the use of double + single and single + double quotes! Also, combine all of your font specifications and use a single "{/font}" tag to restore the settings.

Also note that I replaced the normal HTML tag chars with { and } to avoid issues with the display.

Glenn
_________________________
Actually I am a Rocket Scientist! \:D