In Photoshop CS3, create a "New" document, make it 1000 pixels tall and 600 pixels wide.
Show Rulers in the View menu.
Using the selector tool, draw guides from the left ruler right to the 100, 200, 300, ... 500 pixel marks. (5 total)
Using the selector tool, draw guides from the top ruler down to the 100, 200, 300, ... 900 pixel marks. (9 total)
Congratulations, you have a sprite sheet with 10 rows, 6 columns, 100x100 sprites, and the outlines are shown!
Jon Watte, Direct3D MVP
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