A windows calculator that can do everything?

[Nonagon]

Can anyone recommend a good windows calculator that they've used that has a great deal more power than that basic windows calculator? Namely, I'm looking for one that can do a lot of things with Pi and e.

Thanks

 

[TyloniusFunk]

You are aware of the View -> Scientific functionality of Windows Calculator already?

If so, you could also try a TI-89 emulator http://mathematics.mc.maricopa.edu/seims/TI-Emulator.htm.

Beyond that, you're looking at Mathematica, http://www.wolfram.com/.