WordPress MU

Hi..
i am using wordpress mu 2.8.4 and i have around 200 sub blogs in it.
my client wants to change the url of each blog to specific url.
Ex: http://myblog.com/blog1 to http://anotherblog.com. My client already registered 200 domains and all the domains are pointing to main site.

How can i mask the url of each blog. please help me...

thanks
regards

The domain mapping plugin.
http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/

Thanks for ur response..
i had already installed this plugin. but, it is giving the blow error.
Sorry, domain mapping only works on virtual host installs.

How to install virtual host?

thanks

Sure you have the latest copy?

ya, i am using wordpress mu 2.8.4 version and the latest version of wordpress mu domain mapping plugin.

Double check that you have .5 of the domain mapping plugin. It supports subfolder mapping, where as .4.3 only supported subdomains.

Thanks miklb.

i am trying to map the sub-folder url with another url. but i didn't get it. i followed the instruction given in domain mapping plug-in (version .5). Could u please help some to get this done.

thanks
regards