Not really, depending on the version of Photoshop, depends on whether these plugins are compatible. Some aren't and you need the one off the CD
Besides I can't read French so I don't know whether they are compatible with the CS2/3/4 versions.
EDIT: I was only asking Vortex which version he had because of this incompatability with plugins that has occurred with CS3 & CS4, besides I was originally answering to vodley when this PS plugin came around again and I/we don't even know if he uses PS.