Basically, I installed Leopard on a Macbook Pro that I'd just given a new HD. What I didn't realize was that there was also an issue with the thermal grease (or excessive thermal grease as it turned out) so when I installed Leopard after replacing the HD, the thing got so hot that even though it successfully installed the OS, when I tried to restart it I couldn't. Since I was borrowing the DVD I gave it back and since I've replaced the thermal grease thereby fixing the overheating issue. When I start up the Macbook Pro now, I get the Welcome screen movie with all the languages floating past in space, but then I get a blank black screen with a mouse pointer that ends up taking me nowhere. In Windows, you normally should keep the DVD in the drive after installing from DOS since the installation program still needs more information from it. Is this the case with Leopard? Should I ask for the DVD back again? Thanks for the support in advance.