Extract the Adobe Reader 8 installation filesExtract the Adobe Reader 8 installation files from the compressed executable:

Download the AdbeRdr_en_US.exe.
Choose Start > Run.
In the Open text box, type: "%UserProfile%\Desktop\AdbeRdr80_en_US.exe" -nos_ne.
Click OK.
When the Adobe Reader 8 Setup screen clears, choose Start > Run.
In the Open text box, type: %temp%.
Drag the Adobe Reader 8 folder to your desktop. This folder contains AcroRead.msi and Data1.cab files needed for installation.

The Setup.ini is within the .EXE you have to extract. I just had to work on this today and came across your post. The above should bring some light on things.