  A new method for solving the Bethe-Salpeter equation is developed. It allows
to find the Bethe-Salpeter amplitudes both in Minkowski and in Euclidean spaces
and, as a by product, the light-front wave function. The method is valid for
any kernel given by irreducible Feynman graphs. Bethe-Salpeter and Light-Front
equations for scalar particles with ladder + cross-ladder kernel are solved.
