footman said:
whats the difference between a PVR and HTPC?
PVR means Personal Video Recorder. Anything that can be programmed to record and play video is a PVR.
A HTPC is a PC used mainly as part of your home theatre, e.g. watch TV and DVDs and play MP3s. When installed with the necessary software to allow it to record it becomes a PVR.
footman said:
is it possible to build a PVR from a shuttle box and have it absolutely silent?
You can build a HTPC is any case you want. You could save money and use a standard ATX case if you want to, but it probably won't look nice in your living room. Shuttles need some work to make them silent though.
footman said:
do I have to run XP media centre on the PVR?
I've only used Windows Media Centre 2005 and it was easy to setup and use. There are some free alternatives available. One of them has been bought by Yahoo and I think it's still free, Meedio I think.
footman said:
how does the PVR interact with the other components such as TV,telewest cable box and NAD L70 DVD Receiver?
From my experience with MCE 2005, MCE automatically detected any TV tuners I had installed (2x Happauge NOVA-T PCI). It recognised they we digital tuners, DVB-T, and downloaded the channel list and program guide.
I didn't use an external source, but from what I understand you'll have to install a capture card for each input. So say if you have NTL and SKY you'll need a card for each. You tell MCE which capture card has what source on it etc. The MCE remote includes 2 IR dongle which connect to the remote receiver. You place one over the IR sensor of each box and once MCE is given the correct remote codes it will change the channels.
If you already have a PC I'd advise buying just a PCI DVB-T (Freeview) card and (<£30) a copy of MCE2005, or one of the free alernatives, to play with. Play around with it for a few weeks to get an idea.
And read as many HTPC case reviews as you can before you commit to once. Read real user reviews to find out which ones are really silent and easy to install component in to.