Hello, I have a HP Pavillion 9448m desktop PC running Vista 32-bit. I upgraded the system to Vista Ultimate 64-bit. After the upgrade, when I tried to watch TV using Windows Media Center or PowerCinema 6, I got a no TV tuner card detected error message. From the HP website, I found a Pegatron NXP TV7138 TV Tuner Driver. However, there is no 64-bit version. Anybody knows where I can get it? Thanks.