How to change login url ("wp-admin")?


Is there an easy - and reliable - way to provide a nice login url to our users in multisite? Let's say it would be instead of
"wp-admin" is not very nice, moreover it shows users you're using Wordpress. I won't hide this to them but I don't need to remind this all the time they want to login.

I'd say it'd be a great feature for Ultimate branding, don't you think ?

NB: I'm using Easy blogging and Login redirect among other plugins, so the method should work with these.

Best Regards