I am a really dumbass in things like that. I just wanted to start up a website which is like wahoha in germany, because we haven't one website like this here :/
So, you mean it's impossible with a content management system?
I could see this being done in WordPress. Plenty of people have came up with similar front pages, and the category/image infrastructure is already there. You're probably better off asking the WordPress forums or IRC.
Here you go:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<meta http-equiv="REFRESH" content="0;url=http://www.wahoha.com">
</head>
</html>