To change disk drive letters

To change drive letters (useful if you have two drives and have partitioned the boot drive, but the secondary drive shows up as "D")

Go to Start > Control Panel > Administrative Tools > Computer Management, Disk Management, then right-click the partition whose name you want to change (click in the white area just below the word "Volume") and select "change drive letter and paths."
From here you can add, remove or change drive letters and paths to the partition.

pc lock via mobile

PC LOCK VIA MOBILEbtprox.pngBTPROX application is a bluetooth application for mobiles and it is used to remotely lock your windows computer when your away from your computer and to perform certain required actions from a distance in your computer.BtProx includes a more advanced feature set, allowing you to set a timeout before it locks your PC and run a program when your device is out of range. I had trouble using it with my iPhone, so if you give it a go, let's hear how it works for you in the comments.it is for windows only...REMOTE LOCK FOR COMPUTER,BLUETOOTH HACKING SOFTWARES

Command Prompt on Right-Click

Many computer users, specially the programmers, need to launch a command prompt window every once in a while to execute some dos/shell commands. The problem is, when a command prompt window launched, the default path is normally the system path or the user profile's path. The users will then have to do all the "cd" commands to change the directories to the path he/she wants.This trick shows you how to add an option called "Command Prompt" when you right-click on a folder in Windows. With this option, a Command Prompt Window will launch and its current directory will be the path to the folder you've selected.Use this trick at your own risk.Here's what you'll get: The SolutionYou can either edit your registry OR download the registry file and apply it on your computer.Method I. Manually edit the registry: 1. Start > Run 2. Enter "regedit" and hit Enter 3. Expand to "HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell" 4. Right-click on "shell" and select New > Key 5. Make sure a new key is created under "shell". Change the name of this key to "Command Prompt" 6. Right-click on this new key "Command Prompt" and select New > Key 7. Change the name of this key to "command" 8. Here's what we should have: 9. Double-click on the "(Default)" text on the right window to bring up the edit box 10. Enter this text into the Value Data field: cmd.exe "%1" 11. Click OK and close the registry.