Can i map an "external" subdomain with a MU install with Domain Mapping plugin ?

Hello.
I made a site on the URL http://abc.com/site1 (this is MU btw)
I want another subdomain named http://get.xyz.com to point to http://abc.com/site1
Is the Domain maping plugin done for that ?

Note: The subdomain is hosted in a different account at another hosting company.

Thx a lot for your quick response.