Are there any plugins and / or guides for customizing the admin interface? Basically I want the admin look like the rest of site, without wp news etc, so that users don't get confused. My intention is to use wordpress as a multi user environment for posting observations. It's not exactly a blogging site in the usual sense, so I don't want the users to get distracted, they just need to be able to add new posts / comments and upload photos.
If there are such plugins what are the better ones? Anyone using them?
Thanks in advance.