  The branching ratios of the lightest CP-even Higgs boson $h^0$, in the
framework of the General Two Higgs Doublet Model are calculated. Different
scenarios are presented taking into account constraints obtained in previous
works on the flavor changing neutral currents factors. Plausible scenarios with
flavour changing processes at tree level like $b \bar s$ and $t \bar c$ are
analyzed for relevant region of parameters. The loop-induced Higgs couplings to
photon pairs can be tested with a photon collider. The number of events of
$h^0$ as a resonance in photon colliders are calculated taking into account its
corresponding background signal in TESLA, CLIC and NLC.
