If you want to connect a computer to the tv. You'll need to look at your tv inputs and computer outputs. In my case, the tv has a VGA socket so I can just connect the tv up as I would a monitor. I could do the same with HD if I had a card with that output.

My own solution to recording from tv, sharing cds, dvds and other video is to use mythtv. I think Windows Media Center might be similar.

I have the master PC attached to the tv. This has 3 digital (freeview) tuners in it and also a large (750Gb) hard disk which I use as central storage.

In addition to that, Pip's and my PC's can also handle some of the tasks as well as for watching/listening. CD's/DVD's can be imported and burned, programs scheduled, recordings deleted, etc. from any of the 3 locations.

With this setup, the master PC needs to be on to use mythtv on the other computers but the master spends a lot of time powered "off" just waiting for a WOL instruction to come to it ether from the other PCs or from a low power device that wakes it up in time for a recording. The myth backend itself will shut down when it's got no recording work to be done and the other PC's are not using the service. It also works out when it needs to be woken up for the next recording. It just needs a couple of small scripts on top of that for it all to work together.

It's a linux solution though.