@Bigbronc
OS2.0 and a CD drive will do just fine; OS3.1 won't make your life that much easier as the Commodore CD filesystem supplied with OS3.1 isn't that good anyway, and you will need to do some manual editing anyway.
I take it you have OS2.0 fully installed on the harddrive, so get IDEfix97.lha from
http://www.aminet.net as well as Installer-43_3.lha and lha.run and get all files to your Amiga by your prefered method (nullmodem, CrossDOS, whatever).
The IDEfix installation will take care of adding the needed files to your system (CacheCDFS (the file system for IDEfix), creating the Mountlist for the CD drive with correct device drive and number, and adding a line to your User-Startup if you choose to automount the CD drive during boot).
Your only real problem is when it comes to transfering the said files to your Amiga, after that you are all good to go.