No problem Don. <img src="/forums/images/graemlins/smile.gif" alt="" />

If you'll look in your area under Auto Body Paint supply stores, they carry wet/dry paper up over 3000 grit. NAPA auto stores have fine grit papers in their body repair sections.
If you get up above 2000 grit, you might not need to buff it with anything but paste and a soft cloth.

If you don't have a buff wheel, or Dremel, you can do it with wet newspaper charged with plastic polishing paste. Wet the paper, one sheet, (or thin cotton cloth) and stick it down to a flat surface. Charge it with some plastic polish. Lap the watch crystal by holding on to the watch and working the watch in a figure 8 pattern. Rotate it 1/4 turn every few laps. I've polished telescope secondary flats this way. This actually works very well and is safer than a buff wheel. (no risk of burning the plastic)