Select
the Slice Select tool and
click the slice in the image. When working with overlapping slices,
click the visible section of an underlying slice to select it.
Select the Slice Select tool, and Shift-click to add
slices to the selection.
Select the Slice Select tool, and click in an auto slice
or outside the image area, and drag across the slices you want to
select. (Clicking in a user slice and dragging moves the slice.)
Choose File > Save For Web & Devices.
In the dialog box, use the Slice tool to select a slice.
When using either the Slice tool or the
Slice Select tool, you can switch from one tool to the other by
holding down Ctrl (Windows) or Command (Mac OS).