We report on a novel form of oganization of magnetic vortices in a supercon
ductor driven by a current. By following the vortex motion with fast transp
ort measurements we show that the current enables the system to escape out
of metastable states and explore its energy landscape. Ar low fields and te
mperatures the system relaxes into an ordered vortex lattice while just bel
ow H-e it is in a disordered state. In the intermediate region the vortex s
tate can be controlled by an external driving current. In this regime the c
ritical current can be either increased or decreased with an appropriate dr
iving current.