I don't understand a thing about :
1. When you download Adobe Photoshop CS4, there is no SETUP. Just cut and paste the Adobe folder into somewhere safe, make a shortcut of Photoshop Cs4.exe and put it in your desktop.
2. Put the DTX Plugin (the 4th download above) into this folder. Please follow the path very carefully.
Go to wherever you put your Adobe Photoshop, open it, click App, Photoshop, Plug-ins, File Formats and paste the DTX Plugin there. The Plugin should be like this: DTXFormat.8bi
So the path should be like this:
Where you put Photoshop/App/Photoshop/Plug-ins/File Formats
Got it? No? READ CAREFULLY AND RE - DO EVERYTHING AGAIN.
3. Okay, now you've put in DTXFormat.8bi in Plug - ins, Photoshop will and must be able to read DTX format. If you didn't put and you try to open the DTX skin, it will say 'Invalid File'. Please don't be a fool.