How to delete and import own Themes from CP\...\Personalization?

Meanwhile I have a couple of Themes created.
They appear all in

Control Panel\Appearance and Personalization\Personalization

Under "My Themes".

How can I delete one of theme?

The right-click-context menu does not offer a delete.

Where are they stored?

Assume I save a Theme and want to import it on another Win7 computer.

How can I import such a Theme?

Peter

Sounds like this should answer most of those,

http://www.sevenforums.com/tutorials/2026-theme-pack-create-save-install-delete.html

This is where saved themes are, C:\Users\User-Name\AppData\Local\Microsoft\Windows\Themes

That is a hidden folder by default, http://www.sevenforums.com/tutorials/394-hidden-files-folders-show-hide.html