Desktop Image Auto-cycle App?
 

Since the N900 displays 800 x 480 px photos wonderfully, my default desktop is devoid of shortcuts, bookmarks and widgets - and just shows a beautiful photograph. I now have a growing collection of suitably beautiful 800 x 480 desktop photos, and I'd like to cycle through them automatically. So I'm wondering if there's an app that would allow me to...

• set a time interval between desktop background image changes
• specify a folder in which my 800 x 480 desktop photos reside
• choose to cycle through the images sequentially or in random order

Has anybody come across this kind of functionality in a Maemo 5 app?

Thanks in advance for your time and attention.