Span/Div tags acting funky

[Mike]

I'm making a site in full CSS, barely any images. You can see the image version of it here: http://img263.echo.cx/my.php?image=site31mu.gif

So far, I have the header working and now I'm working on the small opaque boxes right below the header. I've tried making 5 different div's, all with each color and just placing them below the header but they are all on different lines. Does anybody know a way to stop <div> from having a line break after it.

OR

I also had the idea of using a <div> as a container and <span>'s to have the different colors. Problem became that there was a space auto-inserted after the </span> tag, and the span tag wouldn't use the size I specified.

Anybody know how to solve either of these problems?