The strange thing is that although this utility prompts for username and password, it doesn't give an option to select the Access-Concentrator and Service-Provider name. (The list of service-providers and access-concentrators can be obtained using pppoe-discovery).
Use rp-pppoe. I compiled it from source, but you can get its deb package. Configure it using pppoe-setup. You can specify which access concentrator to use by editing file /etc/ppp/pppoe.conf .The two fields you will need to change are ACNAME and SERICENAME Then connect using ppppoe-start command.
-omkar.