I have been setting up an Intel mac mini running Leopard to be a basic file server for my small business. I was doing well until I decided I wanted to change the name of the Home Folder. I attempted this by logging in as "Root administrator" and followed an online "how to". After rebooting I now get a gray screen with the apple logo and a spinning cog. Needless to say I have missed a step!! I have tried using the mac mini's OS X DVD to boot from by holding down the C key while rebooting but it just keeps spinning. Any suggestions on how I can perform a clean install if the mini is not responding to Shift key or C key on boot up? I would appreciate some help with this.