Problems with Vista and XP

[SIMONdesign.nl]

I have a problem with a site that I am developing. In Vista the site is perfect, but in XP the news moves about 20 pixels to the right. When I correct this, it changes in Vista too...

http://www.bedrijfswageninbouw.nl/site/index.php

Does anyone know what may be causing this?
tnx.

[Pierre M.]

Are you using Konqueror or Epiphany ?-)
What is MS support's answer so far ?

Pierre M.

[Dr.CSS]

You are talking about IE6 and IE7  it looks right in Firefox so however you get it to work in IE6 put * html before it and then also use the other style w/o * html....

* html targets IE6 only known as the star hack, I've used them a lot on some designs....