  We have extended the semianalytic technique of Iyer and Will for computing
the complex quasinormal frequencies of black holes, $\omega,$ by constructing
the Pad\'e approximants of the (formal) series for $\omega^{2}$. It is shown
that for the (so far best documented) quasinormal frequencies of the
Schwarzschild and Reissner-Nordstr\"om black holes the Pad\'e transforms
$P_{6}^{6}$ and $P_{7}^{6}$ are, within the domain of applicability, always in
excellent agreement with the numerical results. We argue that the method may
serve as the black box with the "potential" $Q(x)$ as an input and the accurate
quasinormal modes as the output. The generalizations and modifications of the
method are briefly discussed as well as the preliminary results for other
classes of the black holes.
