

Install the downloaded file (with a simple double click on the file), for me the installer found the expired CS2 trial version by itself. You will have to download the plugin and filter, they're both included in the same download so when you install the download it will install both files.

It also works on a trial version that has expired (it worked for me). You will need to download a trial version of Photoshop CS2/CS3, or you already need to have a full version at your disposal. I would also like to add that you do this at your own risk, but it is not likely to go wrong (though these are assumptions). I don't know if it also works for the Extended versions, but I think it works the same way. Nvidia doesn't support the DDS plug-in and Normal map filter for Photoshop versions after CS3, but it is possible to add them to Photoshop CS4 and CS5 (I have the CS5 version and succeeded to add both options).

Also I haven't read about someone who succeeded in doing this for PS CS5. I thought I'd post this (I didn't see a post about this on the forum though I didn't really look for it either), because it is hard to find good info on the net about it.
