thanks a lot junior - would be great to see your experiences.
I ended up using Snap Drag as I am working in Modeller on a house floor plan. I used a few flat boxes to get points in the room corners then killed the polys, deleted unwanted points and formed a new room poly from the remaining points.
It seems like quite a long winded way to get a point to snap to another. Im sure there is an easier way.
Someone just sent me the link for the $30 Sp_move which is for Mac UB -
http://www.pictrix.jp/?s=Px_Bezier&submit=Search