Click link to download this Freeware filter. Instructions and information about the creator is in the Readme.txt Also want to encourage you to go to Cybia. This site has plugins, textures, and 3d resources for bryce and poser. Excellent resource for both PSP and Photoshop
Cybia Colour Works

All filters adjustable.

20 Filters in all

Examples of what this filter does.

Beginning Image

Blackout Bleach
Bymix Contrast
Converse Dual
Exposure Fade
Flood GMmix
Grey Heat
Inverse Mono
Pale RCmix
Reverse Solar
Tint Ultra