I use "John's Background Switcher" -> http://johnsadventures.com/software/backgroundswitcher/

It can change every 10 seconds...god help you if that isn't fast enough!

It can show the same pic on multiple monitors or different pics.  I don't use the stretching features, but they are there and there are several of them, so you should be able to find what you need.

Let us know if that works ouyt for you.

Cheers!

I got myself a Kobo eReader late last fall, about the same time that I ran across Calibre.  I got it originally because I wanted to be able to carry around my collection of out of print Traveller rules books.

Well, *that* was a disappointment - for old stuff like those Traveller books, you get image scans of pages and not real pdf documents.  Still, if I don't mind going blind occasionally (over 50 eyes) I can still read them.  I later discovered a program that would actually OCR scan a pdf file and give me the text!  Awesome, and I am now converting my collection to text, so that I can re-lay it out and convert to ePub which is the native format for the Kobo, although it handles others.

Of course, I am totally foolish to spend this much time on such a project, quite likely *more* time than I will spend reading the blasted things.  Yay OCD!

So, I have been adding to Calibre about a dozen at a time, as I get them converted.  I also have been combing the Gutenberg Project for old out of print science fiction and recently added from there, a collection of Charles Dickens books.  I actually read A Christmas Carole over the holidays, after being a devoted fan of the 1950's movie starring Alistair Simm.  It was fun to discover the movie does not stray far from the book.

So, so far, my experience with Calibre has been flawless.  It's ability to handle copious eBook formats in it's library, it's ability to convert between them, being cross-platform *and* (haven't tried this one yet) it comes with a server you can run on your network and use wirelessly to reload your reader has me bowled over!