Is there a customizable login plugin?

Good Morning. I was curious if there was a plugin to customize the log in to be a pop up with user name/ password.

I am working on a full membership site at http://www.oregonwomensnetworking.org (trust me your plugins have been very helpful) but I am trying to get a login much like your site (WPMU) has (where it pops up on a roll over) Right now I have to send them the exact link but I dont like the "wp-admin.php" part LOL prefer it to be either a "pop-up/rollover" or in the very least http://www.oregon.....org/login.php (I am nervious to change the file name of the php file)

If not that is a ok just thought I would ask you :0)