i would on one accunt or user put more different domains

Hi, can help me anybody, to add more different domains on one account or user The different domains have different homepages

for example:

user: user1 on to user1 will be add the different domains with different homepage domain1.com, domain2.org, domain3.net, domain4.de

Note that this is a duplicate of http://www.virtualmin.com/node/30554 where I already replied.