Hi guys, I've bought a iMac late 2007 (Intel C2D) 20" second hand a while ago. It didn't came with the original DVD's (in fact: no DVD's at all). Snow Leopard was installed by the previous owner, which I continued working with (even updated to Lion eventually). I've replaced the harddrive for a 1TB one, but I can't install the iMac. When booting from the Snow Leopard DVD i get a error message saying that the iMac is unsupported for this installation. Originally there should be Tiger on it, but I've downloaded several Tiger DVD's, but my iMac won't boot from Tiger DVD's. Is there a way to install Lion or Snow Leopard directly? Or what are my chances to find a Tiger DVD?