one routing question

[ESGLinux]

Hi All,

I have two ADSL lines connected to my server (a RHEL 5.4), to eth1 and eth2.
The local network is attached to eth0.

What I want to do is to use one of the lines (eth2) only to web traffic and
all the other kind of traffic  to the other line (eth1)

Using the route command I can´t make this routing, perhaps I can do it using
iptables, but I don´t know if is it possible,

Any help?

Thanks in advance,

ESG