Chat With Command Prompt

If you want a private chat with a friend or client on you Network, you don't need to download any fancy program!
All you need is your friends IP address and Command Prompt.
Firstly, open Notepad and enter:

@echo off
:A
Cls
echo MESSENGER
set /p n=User:
set /p m=Message:
net send %n% %m%
Pause
Goto A

Now save this as "Messenger.bat". Open the .bat file and in Command Prompt you should see:

MESSENGER
User:

After "User" type the IP address of the computer you want to contact.
After this, you should see this:
Message:
Now type in the message you wish to send.
Before you press "Enter" it should look like this:

MESSENGER
User: xx.xxx.xxx.xxx
Message: Hi

Now all you need to do is press "Enter", and start chatting!

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Locking CD-ROM Drives

(For Windows 2000, XP and NT)
      Similar to the above example, it is also possible to lock access to the CD-ROM drive by the following steps:

1. Open the regedit.exe file.
2. Search for the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT  \CurrentVersion\Winlogon
3. Create a new string entry named AllocateCDRoms and set its data value to 1 to ensure that only the  local   logged on user can access the CD-ROM drive. On the other hand, if the string entry's    data value is set to 0 then all restrictions are lifted.
4. Exit the Windows registry. You might have to restart the Windows session for the changes to come into effect.

   
         It is also possible to implement the above by simply creating    and executing a file with a .reg extension containing the    undermentioned data:

REGEDIT4
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Winlogon]
"AllocateCDRoms"="1"

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