You might try this program I found on C|net:
"Murphy's Laws Screen Saver demonstrating popular aphorisms known as "Murphy's Laws". This version includes the MLmaker utility for creation of additional modules to a screen saver. This utility allows to create additional modules to a screen saver "Murphy's Laws Screen Saver" and to edit contents of existing modules. The modules, created through this utility, you can share with a screen saver "Murphy's Laws Screen Saver" version 2.0 and above."
It looks pretty cheesy, but it might do what you want it to...if not, I'll keep looking for something better/more reliable.
