I downloaded and upzipped the sp file, to SYS. I go to install it and I
receive the following message:

No installation file (*IPS or PINSTALL.NLM) could be found at path
C:\NW65SP6. (nwconfig-6-262)

So, what am I doing wrong?

I've downloaded and re-downloaded the zip file and extracted it using a
variety of software, thinking it was that issue.

I disabled anti-virus prior to each download as well.

What am I supposed to do with this thing??

We are on NW6.5 SP3. Are we supposed to install them in sequence?