Show WAN information

I have a Cisco Small Business 101 and I'm using SDM v2.31 and IOS

12.3. I'm trying to find the command that will show the IP address and DNS information assigned to the router from my ISP. My provider is Comcast and the router gets this information via DHCP. I can determine the WAN IP address from the SDM software but I'm interested in determining the outside DNS servers that have been assigned to the router. Thanks.