<yourWebRoot> /LocalizationAdmin /images /App_LocalResources
You can name the directory anything you like, just make sure that you point the resource provider at the administration form with the proper full path in the localizationFormWebPath which is represented like this:
localizationFormWebPath="~/localizationadmin/localizeform.aspx"
The localization form in this directory is fully self contained - it includes its own images, CSS and internal Web Resources so there are no outside dependencies.
Make sure you add the following assemblies into your site's bin directory:
Windows Authentication
If you have Windows Authentication enabled you will have to provide a valid Windows user name and password on the server.
Forms Authentication
If you have forms authentication enabled you will be redirected to your auto-login form.
If no Authentication is enabled the request will fail.
If you are not running a Web Application Project Web site, please see the Setting up the Administration form in Stock Web Projects topic.