One month after a job as Graphic Artist show me that entire email standard (css support in particular) is a complete mess thanks for Microsoft Office 2003/2007. For web client, GMail is the worst while Yahoo does far better job and both Hotmail/Live fares well. Come on! While we struggle to get decent W3C standard to browser, it looks like email is neglected. There is the table for css support and using table for layout design is so 1998.