The best thing to do is to exclude all graphic programs from being skinned. Go to the icon for Windows Blinds in the system tray. Right click and set the "configure" option. There you will find in setting a option that says "per application" use that and locate PSP and tell Window Blinds to exclude it. I do this with Paint Shop Pro, Painter, Adobe Photoshop, Topaz filters, etc.
Most graphic programs have an issue with being skinned.