Just google slicing in photoshop. Plenty of examples/screen shots.
I have my laptop with me and my desktop has PS else I would take a screen shot.
Here's an example. No tut text.
Page 1 is simply the faked design.
Page 2 has the slice lines drawn.
Page 3 has the image sliced.
Page 4 has the slices named.
Just export using the Export image in slices from the file menu.
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