Nic configuration for virtualbox linux kde for accessing internet

[kalpana]

Hello,
.
I have a physical machine with no gateway to internet : private network closed.

I wish to create a virtualbox kde ubuntu and accessing to internet. So what network card NIC configuration virtualbox for accessing internet is good ? : 'bridge' parameter with ip manual configuration -gateway - does not work .

Any suggestion ? Eventually Route line command configuration ?

Thanks !