multiple posters to one blog

Hi, I’m completely new to WordPress, so I apologize if this question is ridiculous. I want to put a blog on my website that will just have four or five people posting to a single blog. Is there any way to do this with WordPress? Or does this require WordPressMU? The WordPressMU site says MU is in the alpha testing phase and so not easy to work with, so I thought I’d double check on here to make sure. Thanks.