The SPSS installation image (SPSS17-042010.iso) file is available online.
It is a large file (approx. 670Mb).
Right-Click or Click on SPSS 17 ISO and then SAVE the file to your local computer.
Here is a screen shot from my computer showing the Roxio software.
You may have a newer/different version of the program, but the idea should be the same.
All CD/DVD burning programs have the option to burn disks from ISO files.
It's just a matter of finding that particular option.
I hope that helps. /8^)>