Question background image

Hi,

i have a noobie question, i want to use an image as background for my website. This is my image: http://www.afbeeldingenuploaden.nl/viewer.php?id=391588BACK.png ... Now, i want to put navigation & text on it. But how do I do this? I need 3 html files with the same background, but on one html file will be more text then on the other one, how do I solve this? For example, it can be that on one page the text is longer then the image. I also uploaded my html file (only put my navigation on my image) : http://uploading.com/files/a6ce95c3/testdocument.html/

Sorry for bad english, and thanks in advance!