EFS Question

I have USB hard drive with an NTFS partiton on it. Some of the files on
that drive are encrypted (standard Microsoft EFS - encrypting file
system -- a feature of Windows 2000 and XP Pro). The drive works fine,
no problems reading it on the computer on which it was made.

Question: How do you access these files on another computer running
Windows XP Pro (or presumably Windows 2000)? (in fact, the drive is a
backup of the primary system's drive, so if the primary system's drive
DID fail, the question would be very relevant).

Things that have been tried:

-export the "certificate" (.pfx) file from the source computer and
import it into the destination computer. Still cannot access the files.

-"take ownership" of the files. Still cannot access the files.

There has to be a way to make these files accessible on a computer other
than the one on which they were created, but I can't find out how to do it.

Barry Watzman