This will give you the world co-ordinates of your selected vert

pointPosition OBJECT.vtx[VTX No.];

and this will give you the local co-ordinates of your selected vert.

getAttr OBJECT.vtx[VTX No.];

OBJECT is the name of your poly object and VTX No. is the vertex number.

My example shows the results for vertex 2 on pCube1.

Hope that's what you're after,

Mat.