hey guys , i posted a question few days ago .
anyhow i found a wicked guide h[ttp://anyweb.kicks-ass.net/linux/tips/tip1.html .

that i followed , but it still aint working
did all the stuff written in that guide but.. the sharing comp became a router for sure.. cuz i can ping my modem from the other computer.

here is the story:
-----------------------

2 comps.
Computer1 - sharing the net
Computer2 - gettin' it. [ suppoze to anyways]
ADSL Modem

computer 1 got 2 nics
External - 10.200.1.1 [that get's the net with a VPN connection]
internetl - 192.168.0.1

and a modem - 10.0.0.138

computer 2 :
----------------
1 nic
192.168.0.2
gw:192.168.0.1
dns:10.200.1.1

and nothing , but computer 2 can ping the modem 10.0.0.138

so it did became a router
but still nothing.
any suggestions.?

can you ping the other side of the router? have you enabled MASQuerading using iptables?

donno what u mean m8

the router too has 2 interfaces - one that connects to your local network via tht linux machine and one that connects to the internet.

Can you ping the internet interface on the router?

yeha
i can.