I've located a file that installs the XP Search Assistant, it's at:
Windows/Inf/Srchasst.inf
When you right-click it, you can installed what's contained therein. Inside are all the variables for the Search Assistant. I don't think I'm capable of aquifying this, but, perhaps someone else is! (You wouldn't even have to change graphics, really, because those would be in the WB/.msstyle/etc. anyway.. just the menus and that mutt)
Also:
If you prefer to use the classic search style in Explorer,Start Regedit
Go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\CabinetState
Add a String Key called Use Search Asst
Give it a value of no
Aqua-Soft Forums