The screeshot below is from Safari on the Mac platform. It shows some positioning problems at the bottom of your page.
You really should be able to make that page in a text editor with simple hand-coded html and very basic CSS. If you learn to do that by hand, you'll have developed a valuable skill.
Dreamweaver can help you move faster, but picking up speed isn't always the best thing to do before you know what you're doing.
Added: Looking at your source code, I can see you're using ".png" images and calling files with paths that have spaces in their names. You're also use an XHTML doc-type but not leaving spaces before the trailing slash character. And in some cases there are tags which should have that trailing slash and don't have it at all.
Some of these things mean
your page isn't validating. Always be sure it validates before putting it online (unless you're making an intentional invalid page - which you have to mean to do).
You really don't need to go to xhtml and css positioning to build that page. Take the time to learn html a little better and you can type valid code for that page into a text editor and have it online with less than an hour's work.