Thanks – but setting up a cluster will indeed take a lot of time that I don’t have (I’m very busy at the moment and in the next few months – to the point that sleeping is something I don’t do enough 😉 ), and besides unlike the common belief, a cluster is not like a stronger computer – a cluster can only utilize CPU time towards things that are easily parallelized, such as doing the same computation on a lot of data. For my intended use (home computing, video viewing, etc’) it doesn’t lend itself.