Yes you can reposition the Google Desktop Sidebar anywhere on the screen. In fact, when you have it against a side of the screen you can also enable the auto-hide feature. Doing so will "hide" the bar off screen until you mouse over the area. This is used commonly to keep your desktop uncluttered until you require the use of it.
To move your taskbar around, right-click on it and make sure the "Lock the taskbar" option is unchecked. Then, click and drag the taskbar to your desired location on the screen. Finally, don't forget to re-lock the taskbar once you've positioned it where you want.
In order to move your taskbar to different sides of the screen, first right-click on the task bar and click "Lock the Taskbar". By default, Windows will automatically lock the taskbar in place to prevent it from accidentally being dragged. Next click and drag it in the direction that you want. When you have it positioned, right click and select "Lock the Taskbar" to keep it where you have it set.
When you do have the taskbar on the screen, right-click on it, and slide down to "Properties". From the menu that comes up, click on "Keep the Taskbar on top of other windows".
The taskbar (containing the Start menu, running programs, Quick Launch and System Tray) can be positioned on any side of the screen, across the top, vertically down either side or along the bottom of the screen (which is where most people have it). If you've chosen to autohide it, simply move the pointer close to the relevant screen area and it will re-appear. If you right-click on a blank area of the taskbar, you can chose Properties which allow control over its behaviour and content.
To move the task bar to the bottom of the screen, right click it to make sure "lock taskbar" isn't checked. Then you should be able to just left click hold, drag towards the bottom of the screen, and that should do it.
The task-bar could disappear if you used F11. It is a shortcut key for making Chrome go full screen.
Position the cursor in the body of the taskbar, not on the edge (where cursor appearance changes to double ended arrow) before dragging the taskbar down.
To change the direction of the taskbar in Windows, you can right-click on an empty space on the taskbar, go to "Toolbars," and then select a new positioning option such as "Left," "Top," or "Right." The taskbar will then move to that side of the screen.
Sounds like you dragged the whole taskbar from the bottom of the screen to the right side of the screen. Just click the taskbar, hold the mouse button down, and drag the taskbar down to the bottom of the screen before letting go.
When you want to run the fullscreen program you can autohide the taskbar. Do this by right clicking on the start menu button and click properties. Then go to the taskbar tab. Then check the box that says autohide taskbar. Then click ok. The taskbar should hide after a few seconds. To bring it back hover over the bottom of the screen.
Right click on the taskbar, make sure that "Lock the Taskbar" is NOT selected, then drag and drop the taskbar to the bottom (click on the empty space in the taskbar and hold the mouse button down and move the mouse to the bottom of the screen then release the button)
Right-click on your taskbar, if a tick is next to the Lock taskbar option, make sure it is disabled. After that click and drag your taskbar to the bottom or top of the screen.