---------------------------
|                           |
|          Frame 1          |
|                           |
 ---------------------------
|                   |       |
|     Frame 2       | Frame3|
|                   |       |
|                   |       |
|                   |       |
|                   |       |
 ---------------------------
|       Frame 4             |
|                           |
 ---------------------------

need a frameset like that.