Q: recently acquired G5 help

Good morning all.  I just acquired a powermac g5 2003 s/N xb*****nvs.

I really want to get this thing up and going and use it for a learning/teaching computer for my children.  Want to let them learn how to operate a computer with it without messing with my main laptop.  I need a few things to get this beast going though.

1. Hard Drive

2. OS software.  It looks like 10.5 is the highest it will take.

Does anyone have a Hard Drive (dont need much since its mainly going to be for my kids use) either with the OS installed or a Hard Drive and an OS disc?  It would be a HUGE help!!

OR-

Any ideas where to purchase these items at a minimal price?  I'm not even sure if there are any other problems with this desktop.

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