Do you have the original hard drive? Check the drive priority jumper on it to see if it's set to master or to CS or CSel (cable select) and set the new drive the same way.
Install the hard drive after the jumper is set correctly and power up the system. Go into BIOS and see if the new hard drive is detected properly. If not, you'll have to do a auto detect so the BIOS knows what kind of hard drive is there. Save and Exit.
What OS are you going to install?
Cricket