Create a very simple bullet, without any fancy anti-aliasing.
Save As a GIF89a-formatted graphics file, with a transparent color being used for the actual bullet color itself, and the color surrounding the bullet set to black.
To use this bullet:
set it into a table cell all by itself, and set the background color of the cell.
Take a look at the source for this page, and see for yourself how easy it is. For the graphics a good product is PaintShop Pro.