network connection problems
hi, i have just installed ubuntu 7.10 i have a dial up internt connection , but which is redirected through a router . after installing ubuntu i tried to set up the network , to have access to internet . i went to System> Administration> Network , also Network tools. i typed in ip, dns . i have internet so to say, meaning that i can only surf the internet , i cannot use the instant messenger and i cannot update the ubuntu system . i cannot install any codecs , drivers . nothing. it tells me to refresh the list and try again . Can you please help me.