To install the PMEM driver.

This process differs for WinNT and Win9x.

If you're on NT, detach pmemnt.sys to your WINNT\System32\Drivers directory and then detach and run the instdrvw utility.
The command should be =>
instdrvw PMEM <drive>:\winnt\system32\drivers\pmemnt.sys

If you're on Win9x, detach the pmem.vxd file to your Windows\System directory.  There's no need to run the instdrvw utility.