Can anyone help?

I am looking to buy a used LT P-600 which has no memory, HDD or PSU.

PSU shouldn't be a problem, Memory too but even though HDD is laptop type, how do i install XP?

Can I boot from USB? If so i was thinking of using another small laptop drive in a USB driven caddy and copying all the XP install data to it then boot from it? Does that make sense?

Otherwise i have a PCMCIA DVD Rom but can't boot from PCMCIA.

Does anyone have any suggestions?