I'm replacing my old PC and would like to utilise the new flatscreen I'll be getting by enabling it to watch Sky TV. What's the best way to do this? I know I can go for a multimedia system but am not sure that I need all the sophistication it offers - or the expense. A cheaper option seems to be a PC with a TV tuner. It needs to be good with Microsoft Office applications too. What are my options? Any advice greatly appreciated.