I need some help you guys. I've been using media portal for about a month or so now, running it on my laptop and connecting it to my tv. it works great, but now i want to get a tv tuner and start recording live tv. Do you all have any suggestions on external tv tuners (and if they are any good at all, including the HD ones). Also I only have 512 ram, so i should upgrade to at least 2 gig from what I hear right or will the 512 do. I have a 300gig external harddrive so storage space is not an issue. Thanks in advance everyone...