Certainly. This is not the place for such a lengthy conversation though. Jeremy has another site dedicated to Android questions - check it out:
http://www.androidquestions.org/forum.php
Or check into 'cyanogen' on the Google. There are MANY forums dedicated to helping with hacking phones. Be sure to have your current firmware version and your phone model number noted so searching for information is easier. Small version/model number differences make a huge difference.
Be aware that this process is lengthy and complicated for many phones, and attempting to replace the OS may permanently damage or brick your phone. With that said - good luck!