Hi Churin,
Go to Start > All Programs > Accessories and, using your mouse pointer,
hover your mouse pointer over the "Windows Sidebar" shortcut icon (so that it
is highlighted), then RIGHT click once. That is, using a standard mouse
with two buttons, use the button on the Right side of your mouse to click
"Windows Sidebar"; (DON'T click on it with the button on the LEFT side your
mouse). You will see a context menu pop up with a list of choices, one being
"Add to Quick Launch"; now use your Left mouse button to choose (highlight
and click) that option in the menu.
After that, you should see a new shortcut for the Windows Sidebar in the
Quick Launch area of your taskbar. If you don't see it, click on the ">>"
icon at the end of the Quick Launch toolbar to see all of the shortcuts. You
can resize the toolbar if you want it to show all the time.
Hope this helps,
Dean