I too can vouch for Cap'n Skurvy's AoB Calculator and omelet maker (you can make coffee with it too, in a pinch
). I've used it since July and think it's the best is/was, banjo, whachamaycallit out there. Finally the java version that works the same way jumped on-board to compliment, not replace, Cap'nSkurvy's great tool. His accompanying tutorials should be must-reads for captains escaping the clutches of the hated green triangle.