OEM is basically going to be the CD only.. no manual or any other information is required. The serial number should obviously be present..
If your purchasing OEM software off of a site, like Newegg, you'll be fine as I've done it and have had no problems. My hard drive was OEM as well.. :-p
Seriously, if you don't need the documentation for XP, which you probally won't, then you should be fine.
PS: Please shorton your signature to a maximum of 5 lines to cohere to the forum's rules. Thank you.