Assuming that you have installed android SDK and tools as shown here, this article focuses on installing the individual apps or the apk files. Eclipse gives you an environment that will allow you to deploy android applications automatically. However one needs to use adb tool for installing app to the virtual device (simulator).
open a command prompt -> cmd in my case. I have this setup on a windows 7 machine. adb in my version (3.2) is located in platform-tools and not tools.
cd to C:\Android\android-sdk\platform-tools
adb install "c:\androidapps\kpsofthello.apk"
120 KB/s .....
Success
Android app is now installed.
