SSH from LAN to Internet via DMZ ip tunnel

Hey,

I'm having a problem setting up a rather complex route.

What we have.
---------------------------------
1.1.1.1 - on lan - Red Hat box
2.2.2.2 - on DMZ - Cisco PIX router
8.8.8.8 - inet IP- Red Hat box
2.2.2.3 - proposed "virtual" ip address

What we want to do is, configure a "virtual IP address"(2.2.2.3) on
the 2.2.2.2 box, that points to the 8.8.8.8 box.

This way we could initiate an "ssh 2.2.2.3" from the 1.1.1.1 box, it
would open an SSH connection to the internet based 8.8.8.8 box.

We've been working with "ip tunnel add", but have had no luck. Perhaps
we're doing it wrong.

Is this possible?

anyone's help would be greatly appreciated.

Darren