[ubuntu] Cant connect to the internet!!!

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http://ubuntuforums.org – Hi guys, I recently upgraded Ubuntu 9.10 from 9.04 but I was unable to connect to the internet. I have a ppp connection and I used to make a DSL connection and then give the command 'sudo pon ppp0' and the net got connected but in Karmic Koala it just doesnt click. I switched back to 8.04 and its working fine with 'Roaming mode enabled'. There is no problem with my connection. And also if it gave some problems then I used to delete all the connections I made and then reboot and then 9.04 would make a connection by itself but 9.10 doesnt. I installed 9.10 within windows using wubi. Please help as to how should I connect to internet in 9.10? I am attaching the ppp0 file so u may suggest the right connection for me if I am wrong. noipdefault defaultroute replacedefaultroute hide-password persist usepeerdns plugin rp-pppoe.so eth0 user "sfurqan" (HowTos)