  We study the dynamics of a N=2 supersymmetric SU(N) gauge theory with
fundamental or adjoint matter in presence of a non trivial Omega-background
along a two dimensional plane. The prepotential and chiral correlators of the
gauge theory can be obtained, via a saddle point analysis, from an equation
which can be viewed as a non commutative version of the "standard" Seiberg and
Witten curve.
