Is there any way to change the position of the User Account box to anywhere other than the 9 default positions? Possibly by editing something in the uifile?

Also, is there any way to make the User Icon and and the Frame transparent?

Basically, I want it to look like you're entering the password on part of the background, rather than in the specific user's account box - and if there's a way to do it without spending the time in photoshop to match the frame and icon up to the background, i'd love it!