A friend and I just picked up 20 sealed copies of Windows XP professional. They don't contain Installation keys as they're supposed to be included with PCs. I see these all the time on Ebay sold with a junk piece of ram, dead hard drive or motherboard to satisfy M$'s rules. Can these be sold without that without getting myself in trouble or do I have to include hardware mandatory?

I am going to sell all but one, paid 20 for the entire lot. Just want to cover my bases before I list them on Feebay.

Thanks