New Internal 1 TB hard drive is not recognized by OSX 10.5 Install

My iMac G5 iSight was not booting up. I brought it to the apple store and they diagnosed that it needed a new hard drive. Decided to DIY and save $350. Bought a Hitachi SATA 3.5" 1 TB hard drive. Installation was not too difficult. It took several attempts to format, then installed OSX. Now just a gray screen and fan comes on at start up. When I run the utilities program on the install disk the hard drive does not appear in list for formatting or for target drive for OSX installation. However the disk shows up under system profiler SATA drive. I did not see any jumpers on this drive or the drive I removed. I also removed the 1 GB ram extension because I was getting kernal panic when trying to install the OS. Any help/advice would be appreciated.

The iSight models are NOT user repairable except for RAM installation. You will need to take your computer to an Apple Store or an AASP for the proper HD installation.
!http://i50.tinypic.com/izvwo1.gif!

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