Specs: 2006 iMac 17" 1.83 GHz Core Duo 2GB SDRAM 160GB 7200rpm HD (48GB Free) My 2006 17" iMac has begun showing signs of old age. A vertical green line has shown up on the screen today. I've done some Google searches and have read that replacing the LCD or the LCD circuit will resolve this issue. I'm just trying to find out generally how much this will cost. I've learned that LCDs for this iMac sell at around $300 so I'm guessing it will be around $400 - $500. Am I in the right neighborhood? Also the iMac has been running quite slow for about 4 months now. My theory is that the hard drive is starting to die. It has 48GB of free space remaining (out of 160GB) but my guess is that even if I free up 100GB of space, it will still run slow. I'm thinking about buying a Avastor 750GB - 1TB for a new external backup source. I see that a Serial ATA 160GB Hard Drive can sell for about $50. Would installing it myself be an easy task or should I bring it into the shop to have it replaced? How much would it cost to have it replaced by specialists? Thanks.