If you like tinkering further- there are P5 ImageIOPlugins and other files that can be put into Pro-Pack to further improve overall PP performance, but the dll's seem to be the best quick fix... DON'T do any of these things without Back-Ups! Or the ability to "roll-back" if something might cause a problem on your specific machine. These things may also NOT work on an older OS like Win98- so be fore-warned.