Can not access to internet

If your "Connect using a dial-up modem" is disable ...
You must start the Remote Access Connection Manager from
Control Panle>Administrative Tools>Services
and if you have Error 5: Access is denied message ...
you must create a file with reg extension like as x.reg, fill it and run it ...
x.reg must be contain below ...

REGEDIT4
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RasMan]
"ObjectName"="LocalSystem"
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RasMan\PPP\EAP\25]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RasMan\PPP\EAP\26]

don't forget ... You must restart your computer after run it ...