Can you give more details about your problem, please? What exactly went wrong?

You appear to be using a very old, unsupported version of Firefox. Can you try again with the current version from firefox.com?

After you Update Firefox, see this - Common Questions after Updating Firefox

• https://support.mozilla.com/en-US/kb/common-questions-after-updating-firefox

Check and tell if its working.

downloaded firefox 6 as advised - now have 4 icons of firefox on desktop none of which have my former bookmarks

Where are my Bookmarks?

• https://support.mozilla.com/en-US/kb/common-questions-after-updating-firefox#w_where-are-my-bookmarks

Lost Bookmarks

• https://support.mozilla.com/en-US/kb/Lost%20Bookmarks

Check and tell if its working.

See:

• https://support.mozilla.com/kb/Firefox+is+already+running+but+is+not+responding
• http://kb.mozillazine.org/Profile_in_use

Are you really using Firefox/1.0.7 as shown by your user agent in the More system details list?

• Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7

• https://support.mozilla.com/kb/Finding+your+Firefox+version
• https://support.mozilla.com/kb/Websites+or+add-ons+incorrectly+report+incompatible+browser