I have encounted similar experiences over the last six years regarding MS
operating systems and their method of operation on an ongoing, daily basis.
MS programs and operating systems do not operate the way we would like,
and that is because Microsoft takes steps to prevent piracy. Duly noted that
you own both systems. But each system is unique, having its own registry
values which are not the same across different computers--even though the
operating system and programs are _exactly_ the same. They are still
considered one-of-a-kind applications by the registry and installers, so
copying the files from one computer to another does not necessarily mean that
they will work. Consider that MS Office, for example, assigns a unique
product ID number found under the help tab from word, excel, etc. each time
it is installed. That ID number must match every registry entry, or it will
take it as an attempt at piracy or some other corruption in the registry or
installer setup.
Basically, without the original source disks for each computer, the
operation will not be 100% successful. Without the disks, installations
cannot be repaired, uninstalled or maintained. If you can get the original
program disks with the product keys that match, then you can simply reinstall
the desired program on your new Dell and delete the old installation on your
Gateway, or just leave them as is and abandon the system.
After going through this several times, this is the only method that I
know of, outside of completely reformatting the hard disk and starting all
over, that works 100%. But in that case you would need the Operating System
disk, the program disks, and knowing _exactly_ what you are doing. If not,
the anger and frustration cannot be measured.
In short, without the original disks and the product keys to match,
you're on your own and basically stranded from any support from microsoft. I
should know, that's why I buy the programs now so that I don't have to kick
my computer anymore from not having the source disks. Microsoft just wants
to make sure they get their money from legitimate sales, and not lose $$$ to
piracy--even though you indicated that you own both systems, Microsoft has no
way to verify that unless you activate the operating system. And without the
original master program disk, that's impossible.