Things you need:

Android SDK - Download
Winrar - Download (32bit)Download (64bit)
Windows PC
USB Cable

A Rooted HTC Dream (Google G1)
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Setting up the Android SDK

Download the file from above
Unzip to your desktop
Take the "android-sdk-windows" folder and move it to the root of your hard drive (C:\)

Right click on My Computer and click properties
Select the Advanced Tab or Advanced System Setting (Vista/Windows 7)
Select Environment Variables...
Press New

For Variable Name type: adb
For Variable Value type: C:\android-sdk-windows\tools

Now, [Get new sdk (1.5r3) to work]

1. Run SDK Setup.exe
2. If it gives you an error go to settings and click on "Force http//....."
3. Select all options and let it download and install

If you cant get the setup to work, Download the USB-DRIVERS folder - HERE (Windows XP/Vista/Windows 7)

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Preparing your phone for ADB

Go to Settings on your phone
Select Applications
Select Development
Make sure 'USB Debugging' is checked

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Installing Drivers

Plug in your phone through USB and DO NOT MOUNT IT!!!!!
Your computer should see a new device and try to install Android 1.0 driver (If it doesnt, scroll down to the "Im not getting a notification of Android ADB when i plug in my USB" section)
Let it load
Once it cant find them select "Install drivers from my pc"
The drivers you need are in the Android SDK 1.5r2 folder (C:\android-sdk-windows\usb_driver)
Depending on your OS pick x86 or amd64
You ADB Android Device should now be installed! Good Job

For Android SDK 1.5r3+

1. Run SDK Setup.exe
2. If it gives you an error go to settings and click on "Force http//....."
3. Select all options and let it download and install

If you cant get the setup to work, Download the USB-DRIVERS folder -HERE (Windows XP/Vista/Windows 7)

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Check if your phone is detected by ADB

Open up Command Prompt (Go to run, type in cmd, press enter)
Type in

Code:

cd C:\android-sdk-windows\tools === Press Enter
adb devices === You should see your device listed
adb shell === you should see # in the next line

Now you are all set to run adb commands

Note: for a list of commands type in 'adb' in cmd

CONGRATS YOU NOW HAVE ADB FULLY RUNNING

Credits: nephron@ XDA

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DISCLAIMER
AndroidTechie takes absolutely no responsibility nor do do any of the developers for what may go wrong during this entire process. Remember nobody, besides for yourself, is responsible if something happens to your phone. While many, many people have successfully done this, there is always the very odd chance that even if you meet the requirements, things may go wrong. This website is solely for informational purposes and gives credit where credit is due. AndroidTechie links back to all original content. Please visit those sites.