Setup temp files

[amigo]

You can use installer-specific tools as described above
or you can use method which works with most installers:
set bpx on createfile / copyfile when your temp file is created
when the original file appears in temp directory, stop the installer (JMP $ in sice - EBFE) and replace the file with cracked one
then let installer continue

if replacing is not permitted you must change createfile sharing conditions
Regards
amigo