Took a huge gamble. I Ghosted the C partition of the desktop, and cloned it on to the laptop. Restarted the machine. Obviously it wouldn't start due to tons of hardware conflicts. So I applied the advice above, went into Repair Existing Window XP System, and 40 minutes later, my laptop is identical to my desktop without having to install a single piece of program software.
Wonder of wonders, miracle of miracles.
I have two more laptops to clone. Hallelujah for this recommendation! Thank you!!!