At first I had a hard time trying to figure out how to install this. So, once I figured it out, I have a straight forward tut even a newbee to joomla! can follow:

Newbee tutorial

1. Create a folder called joomMyAdmin (best to do this in your folder that you ftp from).
2. Download the most recent zip file of joomMyAdmin into this new folder.
3. Upload this file to your site.
4. In your joomla! interface navigate to Extensions > Install/Uninstall
5. Use the Install from Url, drop in the link to the zip file. Example: http://mysite.com/joomMyAdmin/Current_joomMyAdmin_file_you_Uploaded.zip

Problems finding this link. Use your web browser to dig out the zip file, got to: http://mysite.com/joomMyAdmin/ and select the zip folder and right click "copy link location" and paste.

Click "Install"

6. Access joomMyAdmin from Components > joomMyAdmin
7. If you are keeping this active on your site, make sure you secure this folder, follow the secure instructions or contact your hosting company.

Hopefully this will help to get this very deserving component a higher rating.