Does anyone know if you can have multiple external IP addreses on an 837 adls router? If so how?

I am using the cisco VPN client 4.6 to connect to my Cisco 837 however I cannot see the network connected to the ADSL router. I can ping and telnet to the internal interface and can ping my connected machine from the network on my ADSL router.Can any...

Can I connect an IPSec VPN form my 837 ADSL router to my 2600 ADSL and still have external internet access at both sites?

I am having trouble configuring an 837 modem to use LLC/Snap encapsulation and obtain a dynamic IP adress.The CRWS setup defaults to VC-MUX and I am not sure what else to manually change using the CLI. I cannot find any examples on the website either...