Network Problem in my company.

Hello guys,
I had a question. But before that, I need to describe the whole scenario in my company to make you guys understand about it.

I work in a Design Studio in India. There is a network connection, a strong internet connection from which we can access the internet.
Its bandwidth is powerful enough to handle 15 terminals at a time, and it does really well.
Recently one intern started practicing in our company.
He keeps on downloading stuff, useless larger files like movies and games, does online chatting while working hours.
The issue is, there are some people who really work, and want to finish the given projects before the deadline.
When we try attaching the finished files to the mail, that are hardly 20MB to 25MB, that takes about an hour, or more than that.
We tried telling that guy not to download anything during working hours, or stop chatting, because it eats up the whole bandwidth speed.

So this is the scenario, and the kid is so arrogant that he doesn't seem to be stopping that. When asked by the senior, he says 'NO'. Its his personal computer, so we cant even check that if he really isnt downloading.
Is there any possible way to disconnect his Internet connection from the other computer on the server, works even if it is possible for some time.
I know the IP address, Internet Gateway of that kid's computer.
Can anything be done from my Pc to disconnect his internet connection for a while, or forever?
Please help, because this is getting on my nerves..!! Any reply would be appreciated, even if there's any software which can do that, I would be glad.

Get his mac address banned int he router. He won't be able to get network connectivity this way.

No no guys, this aint the way I wanted to do it. He's just a kid. And this offensive technique may leade somewhere else.
Isn't there any software, or anything I can do in Command Prompt?

Shut down or re-boot his computer from your computer:

Since it's an arrogant kid, and he's playing games and what-not, his firewall is likely off. The door of opportunity is open since he's on the same side of the router as you...

1. Open Computer Management (Local) ::Start>Control Panel>Administrative Tools>Computer Management

2. At the top of the console tree, right-click "Computer Management (Local)", and then click "Connect to another computer."

3. In the Select Computer dialog box, click Another computer, type the name of his computer, and then click OK. (You can also click Browse to search for the name of his computer.)

4. In the console tree, right-click Computer Management (his computer name), and then click Properties.

5. On the Advanced tab, click Startup and Recovery.

6. Click the Shut Down button to open the Shut Down dialog box.

7. Under Action, select the actions you want to perform on his computer. (Shut Down)

8. Under Force Apps Closed, select the circumstances under which you want to force applications to close when you shut down or restart his computer, and then click OK.

When his computer goes down sit there and think to yourself "Who's your daddy?"

You could just keep shutting his computer off remotely... forever

BTW... You have a PM (Private Message) with better tricks.

If he reads his PM his problems will be solved for quite awhile.

I don't know. They only gave me a gold star in XP.

I could guess it should be quite similar.

I have one even better ... immune from restore point rollbacks or even a "repair" install.

I'll need to get a mod to approve it though and I doubt they'll go for it.

No. I've practiced this and the only thing that stops it for me is the Windows firewall or another one that blocks all incoming connections.

Try the other method you got in a PM.

On the upper right side of your screen there is a link to "Show the right side of the screen"

Click it and a box will finally appear with tabs near the top. click the message tab.