Dual Booting FreeBSD or Linux with XP

Will I have to install either FreeBSD or Linux on a separate partition as Windows XP? And will there be any conflicts and stuff? I wanna use FreeBSD but if there would be problems I'll settle with Linux. I haven't decided which distro yet but that'll be later.

>>6
There's experimental NTFS support for OpenBSD, it's probably also in Free and linux. You can READ a NTFS drive but not actually WRITE, last I checked.