I have a Mac Powerbook g3 running system 9.2 @ 233 mgz, with 96 MBs of
memory.  I purchased it used.

I want scanning on this SCSI system to be optimal, especially for OCR.

Two Questions:  1)  What is the best scanning configuration?  My
research shows that the best combination of drivers & software would
be Want Presto! Page Manager 2.40.05 & VistaScan 3.5.1.  VistaScan is
no longer available in that edition - it's now 3.75.

So do I buy the Page Manager & 3.75, or will they not work well?  In
that case, where do I get unsupported versions – I’ve looked
everywhere.  So answering that they won't work well necessitates you
providing them!

2)  How do I get OCR to work and dump into Word 98

You might want to investigate the VueScan software:
http://www.hamrick.com/vsm.html