[H-GEN] Connecting to 2 ISPs one entirely just for the FreeZone, How?

[De Crow]

                                                   ______
                            +------------+        /     |
                            |            |       | Free |
                +-----------+    ISP1    +-------  Zone |
                |IF1        |            |     /        |
          +-----+-----+     +------------+    |----------
  ___     |           |                      /
 /   \    |           |                      |
| LAN |---+  Linux    |                      |     Internet
 \___/ IF0|   router  |                      |
          |           |                      \
          +-----+-----+     +------------+    |
                |IF2        |            |     \
                +-----------+    ISP2    +-------
                            |            |       |
                            +------------+        \________
 
Ok Basically I want people on the LAN to have to do nothing tricking/change
any settings, I want all the intelligence for this in the router.
 
If a PC on the LAN requests a page that is in ISP1's Free Zone I want the
router to use that Link, for everything else use the link on ISP2.
 
What is the best distribution to use for this? Anyone with past experience
doing something like this?
 
Crowy
(aka Anthony)