You should be able to specify what device to install grub
to from the setup() command.  I'm doing this by memory so
my syntax might be off a bit.

Typically for an MBR installation you'll run (setup hd0)
and for a first partition it'll be something like (setup
hd0a).  If need be I can check my notes at home tonight.

-swf

>     I didn't see any options for Grub to install it on
the first part of the
> partition.  No options for a custom install ( unless
you wanted to go to a 
> command
> line and do it from there.  I don't know enough about
linux to do that ).  Maybe 
> I
> missed something.