PCSetup 1.6.4

Here is the place where I got it from,

http://download.info.apple.com/Apple_Support_Area/Apple_Software_Updates/English
-North_American/DOS-Windows/DOS_and_PC_Compatibility_SW/

PC_Compatibility_1.6.4-1of2.img.bin
PC_Compatibility_1.6.4-2of2.img.bin

I also got the User's Manual (034-0176) at,

ftp://manuals.info.apple.com/Apple_Support_Area/Manuals/hardware/0340176APCCMPCD
UM.PDF