This is a classical card deck for poker, designed ~1860. Installation: unzip the downloaded file. Now move the folder "svg-poker-standard" into the carddeck folder of your KDE4-installation. You find this in your home directory, e. g. in
/home/yourname/.kde/share/apps/carddecks or /usr/share/kde4/apps/carddecks (Ubuntu 12.04). You have to install it only in one of this folders.