You can boot it from the CD drive, at least to test it out. You'll need a bootable Mac CD, such as an OS install disk. System 7.6.1 was the first on CD I think, and you can go up to Mac OS 9.1. There should be plenty of MacOS 8 and 8.1 on ebay.
And you'll need an operating system to install when you get a hard drive anyway [
] ]'>
Hard drives for a 9500 are SCSI 50 pin
Also see here: http://lowendmac.com/ppc/power-macintosh-9500.
You can also boot it from a Disk Tools floppy which you can download from Apple. Making one of these on a PC is tricky but it can be done. Use the search here for details - it's been discussed many times.
And you'll need an operating system to install when you get a hard drive anyway [
] ]'>Hard drives for a 9500 are SCSI 50 pin
Also see here: http://lowendmac.com/ppc/power-macintosh-9500.
You can also boot it from a Disk Tools floppy which you can download from Apple. Making one of these on a PC is tricky but it can be done. Use the search here for details - it's been discussed many times.