This is a Fun filter!
Download and save these two filters to
your plug-in folder in PSP.
Open PSP and any graphic you wish to use.
Your folders will look different. 
What you are looking for is
Lightburst and Lightsplash.
Click on one of them.

Move the Center X and Center Y to position the center of the burst.
Change the other options to alter the look of the rays.

Here is a sample of what I came up with.
I added a small frame to each one using Eyecandy Inner Bevel.

Here I added a layer and a tube of a couple.
I moved the opacity bar to about 40 to get the faded look.

I hope you enjoy this tutorial.