Decompiling .exe .dll into C++/C/VBS

[488110001]

I'm looking for a program that would help me do what the title says. The reason for doing this is to extract certain mathematical formulae relating to trajectories of simulated projectiles in a program. Any ideas?

[Marc G]

Decompiling an exe/dll into C++ is pretty difficult and often not possible or at least the resulting code won't be understandable. And beside this, what you are doing is reverse-engineering that program which is most likely illegal.