This is the older iMac (first generation of the intel chips?) that we had as a family area computer (that replaced an old Dell running Windows, which had died from a hard drive failure).  The 146Gig drive had died and was replaced with a new Seagate 1Tb drive from tigerdirect, that was only $108.00 (they also had 1.5Tb drives for $148.00).  While the system was being worked on, more memory was added to it and bring it up to 2Gigs of RAM.  New hard drive and more memory.