Where can I get the installation software for Oracle 8i DB? I have some backup files for an old Oracle 8i data that was created years ago. I need to be able to view this data and export it to a csv file.

The backup directory includes .dbf, .ctl , .arc and a few other file formats.

My initial thought is to obtain an installation of this DB so I can try to restore it. Is there anyway I can obtain it? (Any OS would be fine) 

Any suggestions on how to do this would be great.
If you have 9i or 10g, you can try starting the database with either of those provided you do a startup upgrade. You should then do a manual upgrade. Of course you need to make sure that the endian is the same, and ideally the same type. ie. Linux/Windows/Unix.