Weird i thought all tablet pc's came with a option to boot from cd-rom why in the heck did they remove the os that was stupid you may have another issue that you are not going to like.

Certain tablet pc's esspecially older ones running windows 95,nt 4.0,98,me,2000 had to be connected to a network and a netowrk install had to happen in order for the computer to boot anything but there may be a work around.

have you tried to boot from a floppy disk here is why i ask if you can get the tablet to boot from a floppy disk then all you need is a usb hub because once the disk's boot and windows 2000 start up disks detect the cd-rom drive it will start the install automaticly

but yet another problem comes to mind as well your usb may be shut off from inside the bios you might want to have a look at the bios on your computer.