When I used to have broadband internet access via cable modem in the US, to set up my DL-604 router was just a simple matter of connecting them up.

Now in Australia I have a DSL-300 modem for ADSL internet access. DSL-300 can store at most one account configuration with a single MAC address. For direct connection to a PC, the MAC is automatically retrieved from the PC as at the time when the accunt configuration is created. If I need to switch to another PC, I actually need to delete the account configuration from the modem, and recreate a new account configuration via the new PC. Otherwise, the modem may show a connected status but I still will not be able to access the Internet.

To connect up my DI-604 router with the ADSL model, it gets a little bit more complicated. I need to

1. Erase the existing account configuration from the DSL-300, if any;
   
2. Set up my DI-604 with a WAN settings of PPPoE with my ISP username and password;
3. Make sure that the WAN MAC Address used by the DI-604 is different from the MAC addresses of all the PC's connected to it.

The other little twist I had was I stupidly burnt the AC/DC adapter for the DI-604, and I couldn't find a substitute that will have the equivalent 5V 2A output. So I just hacked it by taking the adapter from my son's cassette player with a 6V 1A output. So far it just worked :)