Cleaning up an iMac for giving away?

[graylocks]

thanks. now i'm thinking of just doing some clean-up but not wiping the drive. the iMac came with OS 8.6 but at some point i put jaguar on it. i can't figure out how since the only jaguar disks i have are for my eMac 700 and i believe that doesn't allow installations on other machines. i did purchase Panther but at 160MB i don't think this iMac can handle that OS. i'd rather give him an OS X version - his family is only barely mac savvy and would be very confused by OS 8. i just checked and there is absolutely no personal data left on that machine.