Equalizer is a freeware scientific expression calculator. Instead of the traditional look of many buttons, Equalizer has a simple text line on which you can write the expression in the same way you'd write it on paper (expression calculator: typing '(6*5-12) / 2' will immediately show the answer '9'). In addition, Equalizer is fully skinable - you can change its appearance in any way you like.
More info:
hxxp://www.virtualplastic.net/kobi/eq/index.html

this is cool man....
if only i had this earlier.......

my maths sucks