reinstall grub?

I managed to trash the copy of grub on my MBR (installed debian on a 2nd drive, 
but it went and installed grub on my 1st drive, overwriting the version that 
knows how to boot solaris off zfs).

So... any ideas on how to reinstall the solaris version of grub, without 
completely reinstalling the system (b77 of the community edition)?

Thanks much,

Miles Fidelman
 
 
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