Cisco Pix firewall and cisco 2600 Router

Hi I have Cisco pix Firewall and Cisco 2600 Router and I’m new here. Both r already set up.An IP address is given to it as a Gateway. When I telnet that IP it goes into firewall(the prompt is -pix#).How can I enter into router. and
which command will show me it’s over all configuration including all interface setup.