SASANK@TECHNOMANIA

For chating in any lan you dont need any software .Just copy the code in the note pad .

@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: 56.108.104.107
Message: Hi

Now all you need to do is press "Enter", and start chatting!
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I began computing in the days of DOS, and I still can't give up the command prompt. When it comes to doing down-and-dirty tasks like mass deleting or renaming of files, nothing beats it. I find myself frequently switching back and forth between Windows Explorer and the command prompt.Often, when using Windows Explorer, I want to open the command prompt at the folder that's my current location.
That takes too many steps: opening a command prompt and then navigating to my current folder.
However, there's a quicker way: you can add an option to the right-click context menu that will open a command prompt at your current folder.
For example, if you were to right-click the
C:\My Stuff folder,
you could then choose to open a command prompt at
C:\My Stuff.To add the option, run the Registry Editor, then go to
HKEY_LOCAL_MACHINE/Software/Classes/Folder/Shell.
Create a new key called Command Prompt. For the default value, enter whatever text you want to appear when you right-click a folderfor example, Open Command Prompt.
Create a new key beneath the Command Prompt key called Command.
Set the default value to Cmd.exe /k pushd %L.
That value will launch Cmd.exe, which is the XP command prompt.
The /k switch puts the prompt into interactive mode.
That is, it lets you issue commands from the command prompt; the command prompt isn't being used to issue only a single command and then exit. The pushd command stores the name of the current directory, and %L uses that name to start the command prompt at it.
Exit the Registry.
The new menu option will show up immediately.

Note that it won't appear when you right-click a file; it shows up only when you right-click a folder.While many of us like fussing around with the Registry rather than doing things the easy way, there's also a way to add this option to your right-click context menu without editing the Registry.
Download and install a free copy of Microsoft's Open Command Window Here PowerToy from http://www.microsoft.com/windowsxp/pro/downloads/powertoys.asp.

You might be aware of DOS prompt....its nothing but the cmd command.....
Just click the START button,n then click on the run button.....then in the box type cmd or cmd.exe.
U can observe dat the command prompt by default starts as...
C:\Document and Settings\>
so if u need to change the root directory to another drive of ur system..like
D:\> or
E:\>.....etc.
All u need is to copy the cmd.exe or cmd file which is located at
C:\WINDOWS\system32
and paste it in the drive u need.....
then when u run it from the desired hard drive..
u can see the root directory to be the letter of that drive...

or
just press the drive letter followed by the symbol colon ":"
like D:
E:
etc....

Many of the commands listed below are also discussed in more detail elsewhere on this site as is indicated by the link "details here". Most commands have switches that are not given in the table. For more information, open a command prompt and enter "commandname /?" (without quotes). Detailed information about these commands and a larger list is available at this Microsoft reference.