Hi people,

I could use some help routing our "complicated network"

i live in Ukraine and internet prices here are still sky high..

since two weeks i have adsl here but at folowing price => 4GB limit at 65
us$ speed 2048/512

before i had only 2 isdn alike connections with 115/80 speed which costs me
unlimited traffic about 50 us$

now i needed the adsl for some of my projects so i took it but now i want to
route my traffic so that the adsl is only spoken to if it goes about http and
mail...

all other downloads should go trough the second line which is still the isdn
alike line

now the adsl comes in trough a modem which i hooked up on a wireless router
on which 3 computers have access

the isdn alike comes with a modem that connects trough a serial com port and
since this wan network is terrible full of "hackers traffic" (i call it like
that but if you saw my firewall loggs you would also LOL ) did i hook it up
on an old computer which is running IPCOP (linux stripped down redhat made
for routing and protecting networks) from where i have two wired networks =>
green on which all computers from the office are connected too (also the
three computers who have the wireless access to the adsl)
=> orange on which is a mail / file server

now all computers from the network send and receive mail trough the mail
server and common used files are also stored on the file server...

now my problem :

i can route the three windows computers on my wireless network to use the
wired network to take the mail and files from the fileserver with a
persistent route add

but from what i read is it possible to also route the kind of traffic trough
these route add commands??

so i would like to route the ports 80/8080/25/110 trough the wireless and a
bunch of other ports trought the wired network...

is this possible??

IF above is not possible, is there a way to do it by hooking up both
connections on one computer and from there setting up the network??
i tried intergate but that will not divide the traffic trough it ports

i have a few "old " computers (PII500) standing here and a lot of components
but i can not afford to pay for an expensive solution as cisco routers or
whatever

greetz
Slad