i actually found it on mibba :)
what you do is you go onto your 'my mibba' page, on your right side of the page there should be a catagory saying 'profile' and links below it. go to where it says 'CSS' and click it. scroll down to the page where it says 'Layouts' and it should say 'click here' for a premade layout. i hope this helps :)