If haven't had the chance to see it yet, BittBox just got a new (custom) login page. Thanks to the kind souls over at BinaryMoon, it's now relatively easy to make a custom skin for your WordPress login page that won't get over written during an upgrade, because it comes in the form of a plugin! (BM Custom Login) If you have a WordPress blog and want to give your users a better sense of visual connection between login and reading, this is a great way to make your site look a little more professional, and a step above the masses.
Not only does the BM Custom Login plugin give you the ability to customize the generic WordPress login page, there are templates included in the download. A PSD for the main image, and a Fireworks PNG (vector) footer. I thought the instructions were a little confusing, but all I did was use the templates and saved my 2 images as “login-bkg-tile.jpg” and “login-bkg-bottom.gif”. Then I replaced those same two files in ~/wp-content/plugins/bm-custom-login/images, and it worked instantly. No need to mess with the WordPress core files at all!