he question of what to wear for that all-important first sales call has become somewhat murky. It used to be that the only answer was to wear a suit and tie for the gentlemen, and for the ladies a conservative, skirted suit was the only answer. But changing times and relaxed dress codes can now make these answers seem a bit too pat.

The dot-com phenomenon changed business models and also the rules of doing business. Employees were now encouraged to dress down, probably because they were required to work such long and arduous hours. Blue jeans, T-shirts, shorts ... it seemed as if there were no more rules. But with the demise of the dot-com economy, this "no-rules" attitude is also changing.

So how do you keep up? We all know that the first impression is the most important. But showing up for every sales call in a suit and tie can make some clients feel a bit intimidated. The best way to know the answer is to ask the question. When setting up the appointment, ask the client what their dress standard is and dress accordingly.

As with everything, there are some exceptions. Never show up for a sales call in jeans and a T-shirt. Casual slacks, a button-down shirt with collar, or a nice sweater are acceptable for business casual. Make sure the clothing is clean and pressed, and wear shoes that are polished. Don't wear sneakers.

Women should wear a nice dress or slacks and a blouse. Avoid anything low-cut or too tight. Skirts should hit at or below the knee.

If you are in doubt about a client's dress code or are cold-calling, the best bet is to stick with the old suit and tie. It lets everyone know that you are a professional and that you have credibility and mean business.