Hi Guys and gals The internal hard drive on my early 2009 iMac is being replaced but I have to reinstall Snow Leopard myself. I did search in MRoogle and at Apple and cannot seem to find instructions on how to perform a clean Snow Leopard install on an iMac internal HD. Can I do this? And if so how? Or do you think I should try and install Leopard on the existing Hd in the iMac? I still have these discs but have to get the SL applications install disc out of my drive (it's stuck and the iMac won't boot past the blue screen). Thanks everyone! Can I do this? And how?