[PHP-WIN] subdomains in Apache

[PHPWIN]

Hi there 
  Can anyone tell me how to set up subdomains in apache, and  get virtual hosts to 
work, from remote computers to the localhost. The virtual hosts work only locally. I 
guess there has to be some sort of DNServer running on my com as well. Anyone know how 
to do it on a win98?

Cheers
Xon