Hi,
I think you really need to contact your ISP and see if they have a shell of a config you can use.
Their connection system is quite unusual. Most providers these days are using PPPoe. PPPoA systems.
Bridging does work really well in my experience but is used in "business class" connections. It connects quickly, and doesnt require authentication servers to be operating to make the system work.
I used to used an australian ISP called Internode who offered internet connection like your provider does. Are you sure that you have not been allocated a fixed IP address, gateway and subnet mask for the router?
You also seem to be missing a default route command
In your config it would be
ip route 0.0.0.0 0.0.0.0 atm0.1
this is assuming your connection is on atm0.1, it may be atm0.2, just look at your config. Each time you delete and add a sub interface, it creates a new number.
You also need to se up NAT
ip nat inside source list 1 interface atm0.1 overload
You should contact your ISP and see if they can see you connection "come up" when you have your router turned on. If they are not seeing your router and can't ping it then you are nowhere close to being working. If your connection is supposed to get its IP address etc via DHCP, your ISP shuld be able to see your router requesting and receiving its DHCP info.
If all is well, you should be able to ping an external address (by number) from the console of the rotuer. Once you can do this your at 99% working.
Then you need to be able to do the same with a PC connected to the ethernet interface.
