These plugins should work for all versions of Photoshoop

.JNG Plugin

http://files.filefront.com/JNG+Plugin8bi/;12036295;/fileinfo.html
The JNG (JPEG Network Graphics) Format encapsulates a JPEG datastream in PNG-style chunks. Although JNG was primarily a MNG sub format, standalone JNG files are also possible now


.DDS Plugin

http://files.filefront.com/dds8bi/;12036288;/fileinfo.html
The NVIDIA DDS plug-in supports the DXTC texture compression format and allows you to open and save .dds files in RGB format. It reads and writes .dds files in compressed or uncompressed forms, provides support for per-MIP color fading, MIP-corrected normal mapping, and more.

Place them in Photoshop(#)\Plugins\File Formats

Edited by Advancebo on Oct 11, 2008 at 12:21 PM

cool.