I bought a used macbook that came with Leopard 10.5.8 I believe on it and I decided to delete the entire hard drive by going into disk utility and wiping it clean and then trying to install snow leopard like that... Unfortunately when I put the snow leopard install dvd in my macbook it is now not allowing me too install it saying "Mac OS X can't be installed on this computer - This disk requires that Mac OS X 10.5 or later already be installed on your computer" Then it gives me the option to restore from back up (which there is no back up as the hard drive was wiped out) and now I do not know what to do?? Can I do anything too fix this or do I have to get the Leopard 10.5 installation disk and start over?? Please help Thank you!