My advice: DON'T BUY THE HDTV WONDER FROM ATI
I have been fighting with this thing for many months now. Installed a new TERK antenna on top of my house, pointed it 305 degrees and the HDTV Blunder only occasionally works. Many dropouts, usually for minutes at a time. Some channels have squares on the screen, others show "NO SIGNAL".
Just to make sure my antenna was OK, I borrowed a Samsung SIR T151 from a friend, hooked it to my projector and surroundsound, and watched an entire evening with zero dropouts. All 6 local stations were perfect. I am only 8 miles from the transmission tower complex.
I have a problem posted to ATI's 'new improved' problem reporting system, and it has been "work in progress" now for 3 weeks. Please don't waste your time and money with these people.
Otherwise I LOVE MCE 2005!!
My system:
MCE 2005
msi 875P Neo motherboard
2.6ghz Pentium
512 MB memory
RADEON 9800 PRO graphics
2 - 120 GB SATA disks
Hauppauge WinTV-PVR 250
ATI HDTV Wonder (for sale cheap)
Yamaha HTR-5740 surround Sound
Klipsch surround speakers
Panasonic AE-700 projector
GOO Systems - 9 foot projection screen (If you have a projector try this stuff - it is GREAT)