oldtimer38,
those content packs should, at the very least, be downloaded and saved to your hard drive, for future use.
The packs themselves are good to have. They contain EXTRA content to use within PowerDirector. Titles, menus, PIP objects, etc. All will prove to be more and more useful as you get hooked on video editing.
They may also include SPECIAL FX from New Blue, and music from Smartsound.
In a nutshell, I say download and install, it will do no harm, and may contain that special element that makes your video a masterpiece.
Good luck.
Barry
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