try kaptan again
alt + f2 kaptan
go to networkmanager and try to get the new network-line...
if it fail you have to confirm the policykit with your superuser password
and give it one more try if it fails...
try in konsole
and follow some hints like devices and network up
look what it does...
try to configure your modem as a never-stopping router in windows.
and try the first option again via kaptan or tasma
try to start your connection with dhcp
try everything you can imagine
and ask in the #pardus irc channel... so start Konversation parduschannel is configured by default - tell your problem if it does not be solved there....