  We study the current and the associated noise for the transport through a
two-site molecule driven by an external oscillating field. Within a
high-frequency approximation, the time-dependent Hamiltonian is mapped to a
static one with effective parameters that depend on the driving amplitude and
frequency. This analysis allows an intuitive physical picture explaining the
nontrivial structure found in the noise properties as a function of the driving
amplitude. The presence of dips in the Fano factor permits a control of the
noise level by means of an appropriate external driving.
