I could be wrong, but I think you can install Mozilla with java support. If not, there should be directions at the mozilla site telling where to put the plugins. Also, flash (and probably shockwave, if it's supported) come with installer scripts that should put it in the right directory for you... and you have to use the installer script unless you know how to take it apart and do it by hand. Unless it's changed, I believe the installer script is a self extracting shell archive. Again, I could be wrong, as it's been years since I installed Flash.