[Discuss] seeking urgent help for linux network server

[xxx xxx]

dear list,

 I am facing very critical net problem and seeking some urgent suggestion.

 I have 2 broadband connections one from bsnl and another from allience.
 there is a Linksys RV042 router cum hub for load balancing. so that
if one connection goes off the router automatically take the
connection from another.

 I have set the BSNL modem to dial automatically, so I don't need any lan card
 to dial the bsnl.

 but the alliance is actually 24online connection and I need a lan
card to dial the alliance. the machine which dial the alliance has two
lan cards. one is used to dial the alliance and other is used to feed
the alliance connection to the rv042 router. BUT the machine which is
dialling the alliance and bypassing the alliance to the router is
simply becomes an modem. that machine can't access the local network
resources as well as no machine in the lan can access the resources of
that machine.

 How can I fix the problem using a linux server, so that the server
can dial alliance, bypass it to the router and users can access the
apache, samba of this server too ?

 could any one kindly suggest some thing ?

 here is my present setting


 allience connection ----------------> |PC
                                             | eth0
                                             | eth1
                                                    |
                                                   +
                                              RV042------------- >
HUB-------> linux server & pcs
                                                   +
 BSNL modem ---------------------------------------|