I’ve migrated the existing NKS3 panel into CS5 format for use until development of NKS4 is complete.

Installation files are here:
NKS3CS5_Install.zip (right-click, save link as..)

If you’ve got the CS4 version, simply load those presets into Photoshop CS5 and grab the updated .zxp file here:
NKS3CS5.zxp (right-click, save link as..)

If you have no idea what NKS3 is read this.