Hello, I have an iMac G3 DV Special edition which I bought off of craigslist with 400MHz, 384MB of Ram and a 13GB hard drive. It came with Mac OS X 10.1.5 and I'd like to upgrade it to Tiger. I have the install DVD and when I insert the disc, the iMac sees it and asks me to restart the machine so it can install but when I click ok and it restarts, nothing happens. It just boots back into Mac OS X. I've tried holding down the C key and setting it to boot the disk in the System Preferences area but nothing. Does anyone have any tips? Thanks.