Some DOs in asking the boss for a raise:

Prepare a list of your duties before the interview and practice what you are going to say.

Be able to tell the boss you are doing more than what was initially expected of you. "Employers have obligations they're trying to meet, and any employe who helps meet them is looked on more favorably," says Don Ehat, president of Organizational Development Associates, a Washington consulting firm.

Keep a file of your good works so you are prepared to document your case.

Pick a time for the interview when you have just completed a successful project-when "the memories of your recent victory are fresh in management's mind," writes Marcille Gray Williams, author of "The Executive Woman," a Mentor paperback.

Pick a time when the company is doing well or when the boss has had a success and feels more generous.

Write a confidential memo to your boss outlining what you want and then follow up with a face-to-face meeting.

Survey the market to find out what employes doing your job in other firms are paid, and use this information if the boss brings up the question of comparable salaries. "You may be worth $50,000, but if your job isn't worth $50,000 on the market, you won't get it," says Drucker.

Show you are most-conscious-"even if it only means saving paper clips," says Tarrant.

And DON'Ts:

Don't approach your boss on a hectic day when he doesn't need another problem.

Don't say "I need a raise." "The boss doesn't give a damn what you need," says Drucker.

Don't threaten to quit. "The employer can look you in the eye and say he hopes you do well in your next job," cautions Ehat.

Don't argue that someone else at your level in the firm makes more money than you. Emphasize your own contributions.