Bookmarks imported from other browsers are kept in a separate Bookmarks folder. Did you look for a folder in Bookmarks named "From Internet Explorer"? See: https://support.mozilla.com/en-US/kb/Importing%20favorites%20and%20other%20data%20from%20Internet%20Explorer

Other Firefox Bookmarks articles: https://support.mozilla.com/en-US/kb/bookmarks#Importing_and_exporting_bookmarks

You need to update the following. The Plugin version(s) shown below was/were submitted with your question and is/are out of date. You should update to avoid known security issues with the version(s) you have installed. Click on "More system info..." to the right of your question to see what was included with your question.

• Next Generation Java Plug-in 1.6.0_24 for Mozilla browsers

#Check your plugin versions on either of the following links': 

1. • http://www.mozilla.com/en-US/plugincheck/
   • https://www-trunk.stage.mozilla.com/en-US/plugincheck/
   • Note: plugin check page does not have information on all plugin versions
   • There are plugin specific testing links available from this page:
     • http://kb.mozillazine.org/Testing_plugins
2. Update the Java plugin to the latest version.
   • Download site: http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform: Download JRE)
     • Be sure to un-check the Yahoo Toolbar option during the install if you do not want it installed.
   • Also see "Manual Update" in this article to update from the Java Control Panel in Windows Control Panel: http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates
   • Removing old versions (if needed): http://www.java.com/en/download/faq/remove_olderversions.xml
   • Remove multiple Java Console extensions (if needed): http://kb.mozillazine.org/Firefox_:_FAQs_:_Install_Java#Multiple_Java_Console_extensions
   • Java Test: http://www.java.com/en/download/help/testvm.xml

I'm not sure what is supposed to happen if you don't have any of your own Firefox bookmarks when you initially install Firefox and to install "Internet Explorer: bookmarks.

But you can do it now from the Library list > Import HTML > From Internet Explorer.

You can also do this from the File menu > Import > From Internet Explorer, where you can import additional items besides bookmarks (Favorites): cookies, browsing history . I don't know why one would import Internet Options into Firefox.

After importing you will see a Internet Explorer folder added to the end of your Bookmarks Menu folder. Importing does not merge, replace or update existing bookmarks and folders -- it just adds them as they were to the end of your Bookmarks Menu. Good reason not to sort bookmarks automatically, which is an option in the "SortPlaces" extension.

You can move things around afterwards and delete what you don't want. You will probably want to move the bookmarks and folders from your IE bookmarks toolbar (Favorites Bar) into your Firefox Bookmarks Toolbar.

More information:

• Import bookmarks - MozillaZine Knowledge Base
  http://kb.mozillazine.org/Import_bookmarks

For help working with your bookmarks and history see

• Bookmarks -- http://kb.mozillazine.org/Bookmarks
• Sorting and rearranging bookmarks
  http://kb.mozillazine.org/Sorting_and_rearranging_bookmarks_-_Firefox
• Viewing the browsing history
  http://kb.mozillazine.org/Viewing_the_browsing_history_-_Firefoxfox

Thanks, importing from IE was really easy you told me how to do it. Next, I will follow the other reply and update my Java Plugins.