Connecting computer with rednet.

Hello everyone
I was wondering how to connect computers under the scheme

How to bridge the Computer 3 and Computer 6 ??

If he two computers with wireless modems aren't other wise used you can simply run the prepackaged router program I believe.
What this does is retransmit modem messages, so that 3 would send a message, 2 would wirelessly transmit, 1 would receive that and transmit to 6
http://www.computercraft.info/wiki/Repeat