Macbook Pro Core 2 Duo won't install 64-bit OS X 10.7
Your MacBook Pro has indeed a 64 bits processor but it has a 32 bits EFI. So without a hack you won't be able to boot the 64 bits kernel. (source)
Macbook Pro Core 2 Duo won't install 64-bit OS X 10.7
Your MacBook Pro has indeed a 64 bits processor but it has a 32 bits EFI. So without a hack you won't be able to boot the 64 bits kernel. (source)