[vcf-midatlantic] SGI Indigo help at tomorrow's workshop (Saturday)

Hi Everyone, I'm bringing my SGI Indigo to the workshop. Known working CPU, keyboard, RAM and hard drives. Possibly working mouse (likely). Two appropriate CD-ROM drives that don't seem to work (with caddies). I'm just trying to get IRIX installed so I can do some MIPS programming on real hardware. If any one can bring appropriate installation CDs and a known working external CD-ROM, it would be greatly appreciated. Thanks,      -Adam