Hi, I want to create a door with a small window so whats behind can be seen through the window. Is there a way of ''cutting'' out a piece of a quad so its transparent?? Can anyone please help. Thanks.

Don''t think in terms of cutting holes. Think in terms of how the quad can be subdivided:

Original:**************           **           **           **   Quad    **           **           **           **           **************New:**************    Quad   **-----------**  Q |  | Q *  <-- No quad in the middle*-----------**           **    Quad   **           **           **************