I am thinking about taking a spare computer and turning it into a media center using kbuntu and linux mce, similar to many videos out there. I know that the software over works with specific hardware well. What should I be getting? I already have a charter moxi digital cable box/dvr, dvd player, vcr, and sound system. Could I just have linux tap into my dvr to record stuff and get all the videos. Then could I also have a wireless network card on the computer to hook it to my home network, where it would find all my media on my home computers? What sort of cards would I need for this/would work the best/aren't ridiculously expensive.

Thanks for any input,
Eric