WebNashr on "[Plugin: WordPress MU Domain Mapping] Subdomain Mapping"

I have a site (domain.com) and it has a subdomain (sub.domain.com) the two are running on separate WordPress-es.
Now I want to move the two sites to a multisite network of a friend.
I want to map domain.multisite.com to domain.com and map sub.multisite.com to sub.domain.com.
How is it possible?

http://wordpress.org/plugins/wordpress-mu-domain-mapping/