(Note the code in red is what you got in step 1)
If you want to download this gadget to use as an example see fb-sac.xml on the Gadgets page.
Get the code from https://developers.facebook.com/docs/plugins/comments
Make a gadget. See the instructions above.
If you want to download this gadget to use as an example see facebook-comments.xml on the Gadgets page.
Instructions similar to the above.
Get the code from https://developers.facebook.com/docs/plugins/like-button
Instead of creating your own gadgets try the one by Steegle:
Some gadgets, notably Facebook ones, may not work on a private site!!! Sites will have to be "Public on the Web".