If you have input, feel free 2 advise !
Skip Vista 
Seriously: Vista logoff buttons need to be 53x24 each (318x24 in total with all 6 frames). To be precise, the canvas of each button should be that size.....you can make them any size within that limitation. I don't recommend stacked for that section. Here's an example:
For instance what´s the Regular taskbar height ? 30 -32-34 pxl ??
30px should do nicely
