You definitely should have that program in your WINDOWS\system32 folder.
You might try entering the full path:

c:\WINDOWS\system32\regsvr32.exe /u c:\program files\norton
antivirus\officeav.dll

I assume the Norton program was installed on the new OS in the same path as
the old.

--
Jim Rech
Excel MVP
"Donald Jacobs" wrote in message
...
I used to use WinME with Office 2000. When I'd open an excel file it would
be slow due to a request for a virus scan. There was a fix for this that
in made a change to the registry. It was "regsvr32 /u c:\program
files\norton antivirus\officeav.dll"

I am now using WinXP and the slow opening is again with me. When I enter
the command in the start/run window I get a response it cannot find
regsvr32.

Can anyone help me with this problem. I want to stop the virus scan on
open.

Thanks,
Don Jacobs