Getting AD computers remotely?

What I want to do is get a list of all the servers on our domain.

So we have an Admin box that is running Windows 2k3.  I've been told I can't get the activedirectory module for powershell to go on that machine.  Is that right?  If not, where do I get it?

Assuming that's right, can I somehow run the import-module command on my domain controller and have it return a list of all the computers that I can then use in a loop to check drive space and things like that?

I know I can do something like

invoke-command -computername DC -scriptblock{
  import-module activedirectory
  get-adcomputer -filter * | select name
}

But then how can I get it to return the list back to the computer I'm running it from?

Thanks!