Thanks for your reply, I realized that I do not want internet on my vaio because there are other users on the notebook.

My question is how to disconnect or remove internet connection from VAIO , permanently? I know about enable-disable function, thats not an option I want to remove it permanetly. Do I have to go to control panel or somewhere else without damaging the computer.

Its a SONY VAIO notebook S series new.
VGN-S270
PCG-6D1L

Here are a few pointers that may solve your problem.
1. If you have a high speed modem with an option for multiple computers (i.e. you have a switch or router – by the way this is your getaway to the internet), then the possibility that the router is configured to accept any node connection to internet without requiring a username/password. Or the user might know the username/password for the connection. If that is not the case and you are taliking about the Local area connection, the connetion could have been made through a wireless connection near you. Check the connections in My Network Places and ascertain that there is no wireless connection.
2. If you just bought the laptop and didn’t configure anything to do with user accounts, then it’s open to anyone using it. Nowadays, windows computers are sold with IE installed and all you need is an ISP to grant you access to the internet.
For monitoring internet activity, refer to google.

Better, I think, to give him Internet access, and make certain he’s aware of all the bad people and bad software out there. Install a good firewall such as Zone Labs’ ZoneAlarm, spyware tools such as Lavasoft’s Ad-Aware, and an anti-virus tool such as Grisoft’s AVG.

I agree his account shouldn’t be an Administrator – that’s true for most people’s “normal activity” account – but he ought to be able to log in as Administrator when necessary. If you have enough faith in him to buy him a laptop, and if he has enough computer literacy to get online on his own, I think you’re much better off providing him the tools and awareness to be safe online.

To make clear your expectations, you could write an Acceptable Use Policy, talk it over with him and have him sign it. If you find he’s visiting XXX chat rooms or downloading copyrighted materials, for example, he’d lose the laptop for a specified period of time. (This might also be helpful to have on file in case the RIAA ever decides to sue you…)

I hope you find my perspective helpful!

-Bob

You Google it and find dozens more.

You probably don’t want to allow him to use the Administrator account. To see if he has Admin rights, right-click on the Start menu. If the bottom of the shortcut menu says “Explore ALL Users” – he’s an Admin.

Setting users is easy – press Start – Help and you’ll find the info you need.

Another way is to go to his computer when he is not there, boot it up, if he uses Windows XP or Windows 2000, and he is not using “Administrator” account as a primary account, you can change the password of the Administrator account by using one of the tools avilable, such as ones at Winternals.com or Windows Key, then check the settings on the computer.

As you also mentioned that he might physically connect using some kind of USB or cables, just check if you can see any cablings and any wireless devices.

I can’t really help much if you don’t tell us your configurations and what devices you have, type of internet connections, etc.