BLOCK AND UNBLOCK WEBSITES

Many times in schools, colleges & offices surfing some sites like orkut,etc are banned !
To overcome this you can unblock these or block some other websites and play pranks !

Do The Following :
For eg you want to block www.xyz.com !

* Open the folder C:\WINDOWS\system32\drivers\etc
* There you will find a file named HOSTS
* Click on the file and press SHIFT and now right click on it .
* From the right click menu select Open with .
* Now, select Notepad to open the file from the list !
* Now, in the file under the line 127.0.0.1 localhost add another line as 127.0.0.2 www.xyz.com.
* Now, File>>Save !

Now, open your web browser and try openning www.xyz.com , it will not load !

To unblock sites just do the opposite !

BLOCKING USER TO SHUTDOWN PC

This tip is very interesting for home and some small office users, who wants to restrict user's ability to shutdown their computer. You can hide the Shutdown button from the Start menu using registry editor and also restrict access to shutdown .

Follow the given steps to hide system shutdown button from start menu:

*

To use this feature, you will need to be logged into your computer with

administrative rights.

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Click Start button and type regedit in Run option then press Enter for next.
*

Here locate the location to:
*

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion \Policies\Explorer

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Here in right side panel, right click to create a new DWORD value with name NoClose.
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Now assign number 1 to its value data box.
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Now close the registry editor and restart your computer after any changes to go into effect.
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But next time, if you want to unhide the shutdown button then simply change the value data box to 0 or delete this DWORD item.
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Again close the registry editor and restart your computer after any changes to go into effect.

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Lock Your Drives and Folders Using Registry Tweaks

There are plenty of software which locks drives and folder to protect your confidential data. Why waste money on such tools when you can do it with a simple registry tweak? Here’s how:
Caution: Before you attempt these tweaks, please make sure that you have a backup of your registry, just incase something goes wrong in the middle.
Locking Folders:
Consider you want to lock a folder named XXXX in your E:\, whose path is E:\XXXX.
Now open the Notepad and type the following

ren xxxx xxxx.{21EC2020-3AEA-1069-A2DD-08002B30309D}

Where xxxx is your folder name. Save the text file as loc.bat in the same drive.
Open another new notepad text file and type the following

ren xxxx.{21EC2020-3AEA-1069-A2DD-08002B30309D} xxxx

Save the text file as key.bat in the same drive.
Steps to lock the folder:
To lock the xxxx folder, simply click the loc.bat and it will transform into control panel icon which is inaccessible.
To unlock the folder click the key.bat file. Thus the folder will be unlocked and the contents are accessible.
Locking Drives:
We don’t usually prefer to lock our drives, but sometimes it becomes nesscary. Say for instance you might have stored your office documents in D:\ and you don’t want your kids to access it, in such case this technique can be useful for you. Please don’t try this tweak with your root drive (usually C:\ is the root drive) since root drives are not intended to be locked because they are mandatory for the system and application programs.
Start & Run and type Regedit to open Registry editor
Browse HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Policies\Explorer
Create a new DWORD value NoViewOnDrive and set its value as
2^ (Alpha Number of Drive Letter-1) where Alpha number are simple counting of alphabets from A to Z as 1 - 26
For example: to lock C:\, Alpha number of C is 3 so 2^ (3-1) = 4 (decimal value)
To lock more drives, calculate the value of each drive and then set sum of those numbers as value
To unlock your drive just delete the key from the registry