I hooked up my GZ-HD3 camcorder to my CU-VD3U share station, copied all files to dvd-R and my dvd's will not play in ANY dvd player. How do I correct this?

It all depends on what file type your camcorder save video's in and what file types are compatible with your DVD player.

Many camcorders save files on a card as MPEG4, you have to check what yours does.

Its ok to write to a DVD but you have to make sure your DVD player can play MPEG4. If not then convert your files or save your files in a format your DVD player can recognise ie MPEG1 or AVI.

Finally, once you've copied videos in a format your dvd plays, make sure you "Finalize" the disk.
This means that you can't copy any more data, but it makes the disk readable on other players.