If you are still using windows XP and has no plans to shift to the latest Microsoft Windows 7 then here is an another good tool for you. Windows 7 Style Calculater for Windows XP. Windows 7 calculator is a new looking calculator developed by the Microsoft with some added features. So if you, at present, can not use the Windows 7 calculator then here is the similar looking one for you for Windows XP. But before you can use it make sure you have Windows Xp updated with the Microsoft .NET Framework 3.5

Download link for Windows 7 Calculater for XP