Dynamic images with filename as caption displayed inline

This will hopefully be easy for someone who knows CSS better than I do.

I'm loading all of the pictures in a folder to an update panel dynamically.
I want to add the name of the image directly below the image.
These should display inline.

When the image/filenames exceed the width available, I want them to wrap and create a new row of image/filenames.

In other words, display the image as it would typically display, but put the corresponding filename under each image.

I thought this would be as easy as:

.div1 {
display:inline;
}

.div2{
text-align:center;
width:80;
}

<div1>
<div2>(pic) <br/> (name)</div> <div2>(pic) <br/> (name)</div>...etc
</div>

but that isn't working.

CSS is my ultimate time killer. Can anyone tell me what I'm doing wrong?

This is for an intranet application where users will be on IE 7 (I know), but i'm interested in cross browser friendly solutions.

Thanks everyone... I'm two days in and running out of ways to Google my problem.