You can use these gadgets in two ways: either put them on your personal iGoogle page or place them on any web page - say, on your website.
I am currently struggling to salvage my gadgets from the labyrinth of Google's ridiculous procedures... This is the first one I was able to save. If you get it from here, it should work.
This is another recovered gadget:
Finally, the long-awaited Planetary Hours gadget was fixed. It doesn't work on this page as it requires a location selection, but it does work on my iGoogle page. You can find the gadget HERE.