You'd probably be best off with utilizing the "instant" sites created by one of the online systems at register.com. All in one your register your name, pick a site/template, and fill in info and change parameters, etc.
You could use something like frontpage from microsoft, but they do things in such a microsoft backwards sort of way that when you're ready to move up to real web design, you'll be a mess.
Plus, there's the concept of good design. The templates of online systmes like register.com are going to be somewhat basic, but follow good design typography, colors, and principles. When you jump into new software, you'll be trying for the longest time just accomplish and learn to upload someting vs. make it pretty or "spiffy."
The web has come along way and the bar for a spiffy website is higher and higher. WYSIWYG software just can't keep up. You have to learn some html, scripting and programming. To do that, you'll need a higher end app like Dreamweaver or GoLive (which I predict will disappear in the next year) and both of those had steep learning curves.
So, if your company needs something now, go with some sort of online template and get a nice presence out there. If you just want to goof around with something that doesn't matter, go with frontpage. If you know you'd like to dig in deep, get dreamweaver and start learning the basics of html. Then some php, apache, unix, etc.