I am unable to login into yahoomail and hotmail sites. When i called to my ISP. They told that they changed my ADSl link from ATM DSLAM to IP DSLAM and asked me to change the protocol from PPPoA to PPPoE. But why i am able to browse other sites with PPPoA where as these sites need PPPoE. How it works. If it is protocol mismatch all the sites should not open but why only particular sites having this problem. What happens if i use PPPoE when i connected to ATM DSLAM.