If you run Debian Lenny, you may want to get the latest version of Flash Player. It is now possible to install it directly with a Debian package.
Visit the following link to download .deb package :
A prompt will appear to ask you to download the requested file whose name is :
To install it :
root@localhost:~# dpkg -i install_flash_player_10_linux.deb
To find it within the list of the installed packages :
fool@localhost:~$ dpkg -l | grep adobe-flashplugin