How can you do something like this?
 

Hi,

I was looking around on the web and strolled into this site.

http://www.overclock.net

It seems that all topics are located in folders or something.

If you look at new members it will look like http://www.overclock.net/new-members

They also have more domains registered...example if you scroll down on forums to AMD you see under it www.amdforums.net and if you follow this link http://www.amdforums.net you will also go to that section.

My question is how can you do something like this, because I also want to register more domains for use on my forum.

You just register multiple domains, point them all to your site, and use a .htaccess file to redirect users based on the domain name they used to get there.

For the new-members thing, you'll need to use an SEO hack for vBulletin. (Search for SEO here.)

Okay, thx for info ;-)