1) Right click on itunes short cut and select properties. 2) Select 'minimized' instead of 'normal' in the 'Run' dropdown box. 3) Click 'Apply' and then 'Close' 4) Click on modified shortcut 5) iTunes opens normally instead of minimized.
This kind of thing happens with pretty much any program I've tried to have start minimized. Same thing used to happen in WinXP too.