My only gripe about the built in Spellcheck utility in Firefox 2.0 is that there is no interface for managing your custom dictionary words. FF will allow you to add a word to your personal dictionary, but there is no way to remove mistakenly added word from within Firefox interface.
You can manage your added dictionary words by directly editing the dictionary file persdict.dat located in your Firefox profile. How do you get there? Assuming you are using the default profile do this:
$ cd ~/.mozilla/firefox/*.default
On windows this file is most likely located in:
C:\ Ducuments and Settings\ [username] \ Application Data\ Mozilla\ Firefox\ Profiles\[profile]
Once you find your profile directory you can simply edit persdict.dat with an ordinary text editor. Simply take out all the words you don’t need, or add new ones, and save the file. You may need to restart Firefox for the changes to go into effect.
Now let’s hope that Firefox 2.1 has this functionality built into the interface so that we can avoid the hassle.
[tags]firefox 2.0, firefox, dictionary, spellcheck, persdict.dat[/tags]