Redirecting hosted sites on availablily (not servers)

Thanks again. That's a lot easier than I was expecting, and I have to say I'm very impressed by the speed of replies on this forum.

 

 

One last thing, does anyone have a good link to "standard" http commands that can be sent, their order etc? If not I can always pick apart tcpdumps for that kind of thing, but if there's a good link it would be a great help.