Using dreamweaver, I created an html file with a picture that successfully linked to the hyperlinks I put into it. When I open to my local host, everything links fine. However, I am not sure of a few things.

1. How to upload it, so that I can put it into my livejournal CSS.
2. Where to put it my CSS.

I'm still really new at HTML, so if somebody could explain to me how to work this would be great. Thank you!

Just copy the code and paste it into your journal or wherever you'd like it. And imagemaps aren't CSS, they are HTML. :)