Sorry if I made everything confusing.
If you go to your layout page and go to select a gadget, do this:
When the box comes up with all the gadgets, go to "Most Popular" on the top left. Then when a new window pops up, there will be a search bar in the top right hand part of the box. Search "flickr." Then select the last result on the first page, the one that says you can post uploads from any flickr account.
Then you just have to set up a flickr account. It's really easy, and once that's done, the gadget will ask you to type in the username of whatever flickr account you want to put up.
If you have any questions, don't hesitate to ask at my blog (www.grin-grin.com) or email me at email@example.com
Hope this helps!