Hi. I was thinking of the possibility of buying the Time Capsule from Apple and install on its hard drive Snow Leopard and then use it as the main drive of my imac 27 via wifi. Is this possible? If not, would it be possible if I bought an airport express? I would buy another external hard drive, install Snow Leopard on it and then connect it to the airport express. This way it would appear online, and on preferences I would select this drive to use as the main OS drive and then unmount the internal drive of the imac. Are the two ways possible? Thanks!