Keynote must be installed on your startup volume (the partition of your hard disk that contains a System folder for Mac OS X version 10.2 or later). During installation, files related to the Keynote application are placed on your hard disk in the following locations:
Sample documents are placed in the folder /Library/Application Support/Keynote/Samples.
The Image Library is placed in the folder /Library/Application Support/Keynote/Image Library.
Any custom themes you create using Keynote must also be saved in one of the following locations, if you want them to be available in the Keynote theme selection dialog: /Library/Application Support/Keynote/Themes or ~/Library/Application Support/Keynote/Themes.