I would recommend you use
Google Bookmarks for both the Palm and PC and abandon IE and Firefox's bookmarks/favorites.
I did this about a year ago, and will never go back. With
Google Bookmarks, I have the same favorites, no matter what browser I'm using, or no matter where I am.
They work well in Blazer by the way.
In order to import your Firefox bookmarks to Google, download the
Gmarks extension for Firefox.