Prostetnic:
Thank you for your question regarding Application Isolation Wizard and NT4 support. Unfortunately, AIW is not supported for Windows NT 4.0, it appears to only support Windows XP, Windows 98 SE, Windows Me, and Windows 2000 systems.
I also thought it was odd that none of the documentation I've looked at mentions _not_ supporting NT4. I'll pass on a note to our documentation guys, maybe add something saying "not supported on NT 4.0 and earlier OSes..."
Thanks for your comments.