In Windows XP/Vista/7 click to open the 'Start' menu and in the box at the bottom type 'MSCONFIG' and press the [ENTER] key. On the screen that comes up select the 'Boot' tab (2nd from the left) and then check the box next to the words 'No GUI Boot'.  Click 'Apply' and then press 'Okay'. You have just shaved five to ten seconds off of your boot times, have a great day!