When you make your theme OTA you are making it available for people to download it from the net to there BlackBerry. Here are the steps:
1. Complete your theme.
2. Export your theme by going to File > Export
3. Choose the Folder you want to export it to on your computer
4. Export the theme for OTA
Once it is exported we need to get it on the server of your choice. Do to that you will need an ftp client. I use Filezilla, it's easy to use and very effective.
5. Find the folder on your computer in the left pane of Filezilla, highlight and drag the .jad and ALL of the .cod files to the right pane.
In the right pane you will see all of the files you uploaded to the server. The path to the .jad file is your OTA link.
Example:
Your Domain: your-site.com
Your Subdirectory: /themes
Your Jad: /com_plazmic_theme_your-theme.jad
that would all translate to:
your-site.com/themes/com_plazmic_theme_your-theme.jad