It shouldn't be. If you are passionate about your project and can get excited about it, share that excitement with others. We had to do a presentation in my engineering class, with the project called "How Stuff Works." My group chose GPS systems. For my part, I got really excited talking about the computational graph theory. The entire class woke up for that part. This is one of those required classes that people are not interested in. These investors seem to be somewhat interested in your product, as they have agreed to meet with you to discuss it more. That's a good thing! Be excited and get them excited! Practice speaking with passion and energy. Make them love your idea as much as you do.

Also, if you wish to use PowerPoint, remember this:
Screen Shot 2011-11-25 at 5.08.28 PM.png
PowerPoint can be a really effective tool for communicating facts and data, but if used unwisely it can kill many a business presentation.
Keep effects and transitions to a bare minimum, and also keep slides looking consistent.

Make it interesting. Get excited about your product. And most importantly, get your audience excited. Your goal as a salesperson/marketer is to connect with the emotional side of your audience that will decide whether or not to invest in/purchase your product. You also need to support it with logical arguments.

If these are investors, they will be looking at more than the product. What is the market for it? How will you make money? How will you grow your business? You have to sell them on the entire package, not just your awesome program!

I merged them, the answer is the same to both of your questions... The character set is wrong which is why they're not displaying correctly.

Unless you're pulling them out of MySQL, if you are, then most likely you haven't set MySQL's connection to be UTF-8 either, you can do this with a simple query:

mysql_query('SET NAMES utf8');

If using PDO, set that query as a global attribute of your connection using PDO::MYSQL_ATTR_INIT_COMMAND.

Merged your topics as they're the same thing...

The characters will be all screwed up because of the character encoding of the page vs the characters themselves... You're probably needing UTF-8, so you can try something like these...

PHP:

<?php header('Content-Type: text/html; charset=UTF-8'); ?>

(X)HTML5:

<meta charset="utf-8" />

XHTML/HTML:

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>