To install and use the ADB tool:
Download and install the Android SDK from http://developer.android.com/sdk/index.html

Source(s): Android solutions

1.The adb executable is included in this package in the tools directory

2. Setup your OS to recognize the Optimus V and use it with adb

-Windows
Make sure to keep adb.exe in the folder it was extracted in (there is a .dll it needs in order to operate properly)
Make sure the LG Optimus V USB drivers are installed properly. (get them HERE, install all 3 driver executables in the zip file)
Run command prompt.
Go to the directory where adb has been extracted. (ie: cd program files/etc/etc/android-sdk*/tools/)
(or go to your ADB/platform-tools folder, hold the shift key, right click and choose 'open command window here'. Then you can use adb commands in the window.)
type 'adb shell', hit enter.

Source(s): Windows solutions

-Linux
Create a file in /etc/udev/rules.d call 50-android.rules
Edit the file and make it look like:SUBSYSTEM=="usb", ATTR{idVendor}=="04e8", MODE="0666"
You will probably need to restart udev...this is distro dependant usuallyFor example on ubuntu: sudo restart udev
Start the adb server by running adb start-server

  • In some cases you may have to start the server as root by doing sudo adb start-server. This may be remidied by modifying the above file to something like SUBSYSTEM=="usb", ATTR{idVendor}=="04e8", MODE="0666", OWNER="username" where username is your user name (although this did not help in my situation...)

3. Run 'adb devices' and check to see if your device is listed
How to use ADB, along with the command listing - http://developer.android.com/guide/developing/tools/adb.html