But the main thrust of my question is whether there's any reason the MBR should even need repaired, or whether there are any other issues I need to think about which may cause Windows to get messed up and/or become unbootable (given my particular setup)?
The reason I originally asked is that I'm pretty sure the recovery disks I burnt from the partition won't do MBR repairs, though it will do restores and even backup files. The system restore disk I got from HP might or might not (I haven't booted it yet to find out what it does). I don't have a regular Vista install disk.
However, I just remembered that I have the repair disk I downloaded from Neosmart Technologies. Perhaps you've heard of them?
So either way, I think I am covered. Still, for informational purposes, if I don't install grub to the MBR but to the Linux partition, and then I reformat the Linux partition, there should be no effect on Windows or the MBR, and I should be able to boot right into Windows with neither muss nor fuss, right?
Thank you for your reply.