I'd personally dual boot with XP if you miss the old Explorer User Interface.
Or run a VHD of XP IN your Windows 7.
If I can think of any Software/Applications that can "reverse" the Explorer Look & Feel, I'll be sure to inform you.
[I understand that not everyone is prepared for change, but if you honestly Love the "old", share the "old" with the new. It's the easiest way to accept change.