Firefox-Mozilla

[Mervyn & Giuliana Bond]

I have been running Mozilla 1.7.13 on my iMac under OS 10.2.8. 
Mozilla can 'talk' to all my banks where other browsers can't.
However, three days ago I decided to try the more recent version of 
Firefox, viz 2.0.  Previous versions would not perform as required 
but this version does.
I would now like to make Firefox 2.0 my default browser, and clicked 
the appropriate square in preferences for this to happen.
Help for Mozilla said a button in Preferences-Navigator turns on/off 
the default browser condition.  I could not find such a button 
anywhere in Mozilla's preferences.  As a consequence, if I double 
click on a web address in an email or such, Mozilla grabs it.
I have trashed Mozilla's plist file, quit all applications and 
restarted but no change.  Running Repair Permissions gave no joy.  I 
don't wish to uninstall Mozilla just yet, so are there any 
suggestions as to how I might work around this one?
Cheers
Merv
--
"Science teaches that we must see in order to believe, but we must 
also believe in order to see."