How to move the Windows Taskbar from its default position or reset it to its default position
This article describes how to move the taskbar from the default position. This article also describes how to restore the taskbar back to the default position. If you want to reset the taskbar back to the default position in Windows XP or Windows Vista you can have us fix this problem for you, go to the “Fix it for me” section. To fix this problem yourself in Windows 98, Windows Me, Windows XP or Windows Vista, go to the “Let me fix it myself” section.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB253679.