First, you need to install the USB driver from your phone manufacturer, like LG, HTC for your Android phone.
Then I did this and I copy from somewhere:
1. Download the app.
2. Transfer the app to your
phone and place in a folder you will remember placing it in on your SD Card (Skip this step if using you Android to download).
3. Go to the Market (on your Android) and search for Astro.
4. Download Astro File Manager (its free).
5. Once installed open Astro.
6. Go to the folder you put the
application in (if you downloaded from you Android it will be the folder call "download" or "downloads").
7. Click the app once (a Pop Up should appear) and choose open app manager (or words to that effect).
8. Click install once (you may get a Pop Up saying its blocked from installing just go to the settings and check the "Unknown
Applications").
If this is a repeat, MJ says "Whos bad". And I said "I am bad".