Obviously you can't ghost it with standard xp home/pro without a lot of pain but you probably know that.
Mm. No specific ideas, perhaps format a bootable floppy and make an El Torito Bootable cd off of it if you have a dock, and assuming the dock boots cds (I think it does). If not you might have to get a hold of a USB CD/Floppy drive.
There might still be a strange way to get XP to boot to dos mode next boot but generally it's gone (e.g. even safe mode command prompt mode is windowed).
If there is a linux client (think there might be an unadvertised one) and you have an external mouse/keyboard, a bit of persistence, and a small DHCP-free network with a free CD-wielding computer on it along with your tablet you might go grab the Knoppix Bootable CD (knoppix.net) and use their terminalserver netboot feature. I have gotten it working on the compaq to a usable extent.
Actually, on that line of thought, theres no reason you couldn't make/find a network bootable dos floppy. PXE (aka netbooting) implementation on the compaq is good. <s>No idea on that though.</s>
Check this link, download + image a floppy with the image file over at: http://perso.club-internet.fr/ffaure/DOSBootFloppy.html
and please tell me how it works.