Start\Programs\Accessories\System Tools\Character Map and you'll get the complete menu of all fonts and extended characters for any selected font. Just click the character (such as degree sign and you'll see ALT 0176 in lower right corner and you'll get °. You MUST use the numeric keyboard with NumLock set to make it work. Your standard keyboard will give you < and >, of course, as well as + and -. No ALTS necessary for those.