I downloaded a widget from the Widget Browser, and put it in my site folder. I can see and verify that the files are there, but when I go to insert it, it's not on the menu anywhere.
Using DW CS4.
Are you talking about Dreamweaver Extensions?
Then restart Dreamweaver to use the extension.
This doesn't download an .mxp file, but an unzipped folder directly to your site folder.
Retrieving data ...