One does NOT need a real server sever with server software to have the advantages of RAID. If one has a properly configured PC then it is possible. Yes those of us less knowledgable were a little off on the in's and out's of it, but it is possible on good old XP and Vista PC's whether standing alone or acting as the "server" in a P2P enviornment.
I agree with you completely. But, it does come down to the type of controller and not the OS. I think the thing that everyone needs to come away with is that in most environments, I don't think RAID is all that necessary. And, if one is going to go to that step, they may as well go all the way.
I am fairly confident that the same user who isn't comfortable with RAID will set up a RAID1 and then use it as a backup. That's my main concern. That either they use XP Pro and make a RAID0, pretty much useless with no fault tolerance, or they somehow do get a RAID controller card and make a RAID1 and think their data is safe.

The jeep is still making godawful noises when turning from 0 to 10 mph. When the part is in, I am sure it will be all better.