I need some help from one of you experts, i am trying to find out which is the best way to watch dvd on my htpc. I have a dell xps gen 4 3.6 ghz, on windows xp, nvidia 7800 gtx video card, 1gb ram. i have been using the nvdvd and purevideo codecs, (or something like that) but i am reading a lot about ffdshow or something like that, i am still confused. Should you use nvdvd, nvidias purevideo decoder and ffdshow, or is it one or the other? The only way i have been able to get the purevideo nvidia decoder running is when i use windows media player 10, how do you get it to work with another player? I need to know if the dvd player (the hardware) influences on the video quality or is it only the video card? My tv is a panasonic projector AE700 1080i 720p up to 120 inches wide screen. Also for tv watching, i use an Avertmedia tv tunner card, Is there any way i can send the tv image to a decoder or something to get a better video? Can i view tv through another software other than the avertmedia software? My 7800 video card has an svideo input, if i get my cable signal through it, waht software would i use to watch tv, and would nvidia software process the image? What do you think about the x-fi soundcard coming out? Thank you very much for all your help, even if you are not sure about what i am asking, please send me some feedback, i am loosing it!