my video card has A/V inputs in it so ive hooked up a device to teh card with the AV inputs now how to i access the AV input "channel" on meda center to use the device?

Hi antoine...i'm not too sure what you're asking...

AV = Audio and Video....your video card has both?
Or do you mean just a yellow "AV style" plug?

the card has AV (i,e the jacks for the white yellow and red) cords.. but when i plug them in and try to find the input/aux channel (liek youd use on a tv after you plugged in av cables) on media player it cant be found (someone told me those jacks on the card dont work like the tv a/v jacks in in fact thy are only for output only or something so hooking my playstastion to it and expecting to play it on my pc monitor using media center wont work and thats id need a tv tuner card (which is what i THOUGHT i had seeing as i can watch tv on my pc using media center just fine) to do what im trying to do.... however the card also has an RFU input (teh thing you use two screw a cable cord in for example) if i hook up my playstation using RFU instead of A/V cable then turn media center to channel 3 it gets my playstation on screen just fine and i can play using that... thing is my rfu cables no longer work so all i got left are the AV ones lol