You will need the Filter Factory Gallery V plugin for this tutorial. You also need to download Plugin Commander from a link on that page so that you can convert the plugin for use with Paint Shop Pro. OK, you've got the plugin, lets get to work. Background Graphic Click on the background graphic to see it tiled. Add a new layer.
Flood fill new layer with white.
Click the OK button. Merge the layers on the copy and save as a jpg with compression no more than 15. Don't save a rainbow graphic as a gif. Saving as a gif will dither the colors badly. You might want to save the original as a PSP file so that you can go back later and adjust the opacity some more if you find your background ended up too dark.