After you have downloaded and installed the SDK,
run the emulatorThen, open Command Prompt,
enter the directory
e.g.
android-sdk_m5-rc15_windows\tools\
android-sdk-windows-0.9_beta\tools\
To install, type
adb install your_application.apk
To uninstall, type
adb shell rm your_application.apk
See
here for more details.