|your TV card is analog only...you need something like|
the following to also get the HD channels...
HP USB TV Tuner
This hybrid tuner delivers traditional NTSC analog cable TV, HD6 digital ATSC3, and clear QAM digital TV.
•Watch and record analog cable TV, hi-definition digital ATSC1 or clear QAM digital TV on your PC
•Record shows at home, then enjoy them on the go
•Watch, pause, and rewind live TV or listen to live FM radio on your notebook
•Quickly see what's on with the easy-to-use electronic program guide
•Control your content with the full-function media remote control
•Get started fast: there's no additional software to install
•Get questions answered toll-free, 24 x 7, or via e-mail in as little time as an hour
•Warranty: one-year limited
•Compatibility: HP Pavilion dv4, dv5, dv7, dv2000, dv3000, dv3, dv5000, dv6000, dv8000, dv9000, tx1000, tx2000, tx2, dx6000; HP HDX16, HDX18; Compaq Presario V3000, V6000
•Minimum system requirements: Microsoft Windows Vista; AMD Turion 64, Turion X2 Dual-Core, or Turion X2 Ultra Dual-Core mobile processors; Intel Pentium dual-core, Core Solo or Duo, or Core 2 Duo processors; 1GB system memory, available USB port for USB TV tuner, available USB port for remote control receiver, available TV signal source (may also require cable or satellite set-top box, which is sold separately)