so this touches on something I was going to ask. from the above posts it sounds like you cannot use URL rewrite to the the following:
take iis7.com/apps and rewrite the url to be iis6.com/apps so that only iis6 apps would be sent to an older server and iis7.com/newerapps would still be running on iis7.com
it is rather advised to us ARR to do something like that?
-arthur