XBMC vs XBMC in aTV? Help me understand!

Help me understand…

Whats the difference between a clean XBMC installation compared to the one provided with aTV Flash?

Another one… i can´t seem to adjust XBMC (provided true aTV) to fit my screen properly, any idéas?

 

Thanks! 

1.xbmc=xbmc
2.xbmc>system>appearance>zoom

In XBMC did you go to SYSTEM>Settings>System>Video output.  Scroll down to Video Calibration and select.  It should let you move the frame into view.