Error Code 721

[Erol]

I cannot log onto the internet, remote computer not
reponding can you help

 

[Taurarian]

http://support.microsoft.com/default.aspx?scid=kb;en-us;318009
"Error 721," "Error 678," "Error 691," or "Error 777" Error Message When You Try
to Establish a Dial-Up Connection After You Upgrade to Windows XP