Hi Glenn,
Normally PFE looks for this file in the Windows\SysWOW64 folder. Assuming you have a 64 bit OS. For a 32 bit OS, use the Windows\System folder.
This driver file shouldn't be in the application path at all, since each app (PFE, PI, Thermo, Bruker), all need to access it for instrument communication. Putting this driver in each app folder means you'll have multiple instances of the driver in memory all trying to talk to the instrument, slowing things down.
I'll send you a document to your email.
john
PS You did install the EIKS stuff also? The JEOL EIKS DLLs *do* need to go in each app folder, because it is not multi-threaded like our driver.