Importing Bookmarks into "Opera"

Recently I am into the Opera Browser. I am liking it. Something happened to my Firefox browser. It just was not enabling the auto-suggestion, when I type in the names in the address bar. I tried suggested approaches (by doing a google) to solve this issue. It seems nothing was working for me. I am suspecting this misbehavior happened due to my sudden impulse for upgrading Firefox to its latest version(Version 4.0). Though it is good to enhance the browser to latest version, unfortunately it does not work on some bengali website that I accidentally visit (e.g., Sachalayatan et cetera). That led me to uninstall Version 4.0 and revert back into my older version.

I decided to import those saved bookmarks that I saved for a period of more than a year. Here are the steps I followed:
1. Go to the Bookmarks tab.
2. Select Manage Bookmarks.
3. Choose the File tab from several others(Add, Open, Properties, Delete, etc)
4. Pick Import from Firefox Bookmarks.(from the various others Import from Opera, Import from Safari etc)
5. Point it to the location of the bookmarks.html file that is saved in your computer. In Mac OSX,
it is stored in /Users/currentUser/Library/Application support/Profiles/xxxx.default/bookmarks.html
Alternately, I saved the bookmarks.html file in a known location by exporting it from the Firefox menus.

Helpful other hints.