Daemon doesn't finish loading program!

Running WIN XP.  Have downloaded an automotive software program to a portable hard drive.  Original was on 4 DVD's.  Tried installation with virtual floppy software which worked before I had to replace my hard drive.  Now trying to re-install program.  When I try to install the program with virtual floppy, Nero 7 opens and I am unable to choose any other drive other than my real DVD burner.  I then installed Daemon Lite and succeeded in getting the initial setup loaded but cannot get the program files to transfer from the portable hard drive.  I am lost and don't seem to be able to find a way out.  Any ideas would be appreciated.  Thanks, Pat.