Css styling problems

Hi all!

I’m importing text & images into a Flash movie using external html files and an external css file.

I can adjust the line height for paragraph text using in my css file:

p {
    font-family:Verdana, Arial, Helvetica, sans-serif;
    leading:0;
    }

but I can’t find a way to alter the massive spacing between paragraphs and underneath h2, h3 and lists.

Also, is there any way to prevent text wrapping around an image - other than tell the client to add extra breaks or empty paragraphs to force the text to move down and appear underneath the image?

Thanks for any tips!
Carolyn.