Dual booting WinXP and FreeBSD - odd problem

[Mike Maltese]

I've installed FreeBSD on a friend's box with a pre-existing Windows XP 
installation. This isn't the first time I've done this, my personal 
desktop machine is dual boot Win2K/FreeBSD, and there are no problems.

On to the problem...the machine starts up normally and the FreeBSD boot 
manager presents my boot options (F1 - ??, F2 - FreeBSD). When I press 
F2 to select FreeBSD, the machine just beeps at me. Pressing F1 boots XP 
with no problems. The only thing that I can think of is that the boot 
sector of the FreeBSD slice isn't where it's supposed to be, but beyond 
that I'm stumped. Anyone have a suggestion as to what may be causing 
this and how I might remedy it?

TIA, Mike