I went into Photoshop, and used the Noise filter on a white background to make that grainy texture. Then I messed with the levels to make it pure black and white. From there, I removed all the white using Select>Color Range and thus made those pixels transparent. From there, I saved it as a PNG, and imported the image into Flash. I made the image into a symbol, and put the symbol on like 5% opacity. That's what gives it that subtle look!