  We investigate transport of Cooper pairs through a double quantum dot (DQD)
in the Kondo regime and coupled to superconducting leads. Within the
non-perturbative slave boson mean-field theory we evaluate the Josephson
current for two different configurations, the DQD coupled in parallel and in
series to the leads. We find striking differences between these configurations
in the supercurrent as a function of the ratio t/\Gamma, where t is the
interdot coupling and \Gamma is the coupling to the leads: the critical current
I_c decreases monotonously with t/\Gamma for the parallel configuration whereas
I_c exhibits a maximum at t/\Gamma=1 in the serial case. These results
demonstrate that a variation of the ratio t/\Gamma enables to control the flow
of supercurrent through the Kondo resonance of the DQD.
