You might be able to make slideshows with OpenOffice, I haven't used it in a while though, because I have a legit Office XP.
Powerpoint would be my other recomendation, but you have to drop money on that unless you want to take the road less traveled.
I'm googleing around cause i'm bored:
You could download Photostory 3:
http://graphicssoft.about.com/gi/dyn...y/default.mspx
You need a legit copy of XP that has been activated though.
Trial version of ProShow, fosho...heh.
http://www.photodex.com/downloads/trials.html
It's just a trial...i dunno if you are looking for a permanent slideshow solution.