  In this paper, we propose a new virtual interpolation point method to
formulate the discrete Stokes equations. We form virtual staggered structure
for the velocity and pressure from the actual computation node set. The virtual
interpolation point method by a point collocation scheme is well suited to
meshfree scheme since the approximation comes from smooth kernel and we can
differentiate directly the kernels. The focus of this paper is laid on the
contribution to a stable flow computation without explicit structure of
staggered grid. In our method, we don't have to construct explicitly the
staggered grid at all. Instead, there exists only virtual interpolation points
at each computational node which play a key role in discretizing the
conservative quantities of the Stokes equations.
  We prove the inf-sup condition for virtual interpolation point method with
virtual structure of staggered grid and the existence and stability of discrete
solutions.
