Accessing a domain on a different forest

Hi All,

We have a Domain ABC that resides on its own forest XYZ with no trusts establishes between our forest and XYZ.  We do have the server name of their DC and the credentials to RDP onto their environment.  The problem is, we want to be able to image user machines for this ABC domain but in the process need to join the machine to the ABC domain.  I don't see how we can do this without establishing a trust between the XYZ forest and ours.  Is there a way without going the trust route?

Francisco Mercado Jr.