  By including the recently discovered Higgs-like scalar $\varphi$ in the
Electroweak Chiral Lagrangian, and using the Equivalence Theorem, we carry out
the complete one-loop computation of the elastic scattering amplitude for the
longitudinal components of the gauge bosons $V=W, Z$ at high energy. We also
compute $\varphi\varphi \rightarrow \varphi\varphi$ and the inelastic process
$VV\rightarrow \varphi\varphi$, and identify the counterterms needed to cancel
the divergences, namely the well known $a_4$ and $a_5$ chiral parameters plus
three additional ones only superficially treated in the literature because of
their dimension 8. Finally we compute all the partial waves and discuss the
limitations of the one-loop computation due to only approximate unitarity.
