ah thats an easy one :D. right click on the taskbar (in a place where there arent any programs, just an empty space on the taskbar) then right click, place the mouse over lock the taskbar. make sure there is no tick to the left of lock the taskbar. if there is no tick, click somewhere else on the screen. if there is a tick, click the "lock the taskbar" button to make the tick go away. then simply click and drag the taskbar from the side, back to the bottom. to stop this from ever happening again, make sure the taskbar is locked (after its in the right place) by clicking the button to put the tick back on.