HP PrecisionScan LT Software Disks
for HP ScanJet 4100c
I found out that you have to run CheckHw.exe in the root of the CD before you can run the setup in x \english\app\disk1
If you don't run this the setup program whinges that you are not running the correct setup program from the root of the CD.
CheckHw.exe sets some registry keys which then allow the setup in Disk1.zip to work.
You will need this file Root.zip AND
all three files I have submitted -
You will probably also need the drivers directory (SJ4100Cdrivers.exe) Submitted By Anton Kulik.