Registry Trick: Open Command prompt here

Here is a simple yet very useful registry trick to add "Open Command Prompt Here" in the context menu of all directories.

1. Open registry using start->Run->Regedit
2. Navigate to HKEY_CLASSES_ROOT\Directory\shell
3. Right click and add a new key named OpenCmdHere.
4. Change the value of (Default) to "Open &Command Here" or you can set this value to anything text which you want to get displayed in the menu.
5. Create key command at HKEY_CLASSES_ROOT\Directory\shell\
6. Change the value of (Default) to cmd.exe /k cd "%1"

Now the registry should look like

Registry Trick: Keeping the Outlook 2002 in system tray instead of taskbar

If you are using outlook 2002 and you want to keep the outlook in system tray like th outlook 2003 and above you have to addd registry value. Which will put the outlook in system tray when minimized.

Step1: Goto start>run type regedit and press enter

Step2: Browse to the below registry key
HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Preferences

Step3: Modify or create the value MinToTray of DWORD datatype and set its value to 0 = Disabled or 1 = Enabled

Step4: Exit regedit and restart outlook.

Now on minimizing outlook it will move to system tray.

Registry Trick: Hide and lock any drive(s) using regedit

You can hide any of drive(s) by just adding two keys in windows registry

goto start>run

Type regedit and press enter. This will bring you to the registry editor.To hide any drive you have to follow these 2 steps

STEP1: Hidding Drive
goto HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer now create a new DWORD value NoDrives 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 hide C drive
Alpha number of C is 3 so 2^(3-1) = 4 (decimal value)

If you want to hide more than one drive than calculate the value of each drive as explained and then set sum of those numbers as value

Step2: Prevent Access to the drive
Now as we have make our drive invissible but it is still accesible so to lock the drive we will create another DWORD value at

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
create a new DWORD value NoViewOnDrive and set its value same as you have calculated for hidding the drive(s)

Now your drive is locked. If you want to unlock and unhidden the drive then just delete these two keys and your drive is again accessible. You can also create two .reg files one for hidding and locking and another one for unlocking and unhidding

Registry Trick: Multiple instances of yahoo messenger

Have you ever felt the need of using multiple yahoo messenger instance from the same machine? Yes, then here is the way to do it.

•Click start then run. Write regedit, press enter
•Goto "HKEY_CURRENT_USER\Software\Yahoo\Pager\Test"
•Create a DWORD registry value named "Plural" by right clicking the right hand side window.
•Double click the new DWORD entry and set the value to 1
Now you remain online with two or more different yahoo ids at the same time.

source: http://www.thinkdigit.com/forum/showthread.php?t=55350