You can say good-bye to "pink-sheet" stocks if the National Association of Securities Dealers has its way. NASD will soon require penny-stock brokers to report substantial daily transactions, in hopes of better policing the market -- and thus improving penny stocks' reputation. The next step? An electronic bulletin board, so that current penny-stock quotes can be obtained by computer, rather than once a day in the pink sheets. NASD wants to have both systems running by year's end, says vice-president Enno Hobbing.