Updated samples; I added short comments on how to change the tint of the starfield and how to make them appear more smoothly. All 3 samples have been updated, however the tutorial text is still the same.
I updated the tutorial and added a little extension: Lines instead of pixels! Using lines the starfield even looks good on higher speeds, where yet the pixels skipped too much space.
You can read the extended tutorial here. The sample download again comes in 2 flavours: With and without background picture.
Also I changed the example with bigger points; instead of PSet it uses the API now to draw the big pixels.