http://www.formymobile.co.uk/Dismantle/w580disassembly.htm
To be honest the way I opened the front was use a razor blade and slide it under the face plate at the top, on the w580i theres 2 clips at the bottom that you can break (don't really effect the fit but you know you don't have to break them if you don't want to) right about where the memory card slot is. If you need me to video it I can.
Steven W., February 2009
