Help! seeking a way to capture game footage.

I want to record my audio and video from my xbox 360 with some sort of video & audio capture device, and i think getting a video card might be the answer, but im not sure.

I am playing on a monitor with dual inputs. VGA going to my xbox, and DVI going to my PC.

How would i be able to capture the audio and video being outputted by my 360 and save it directly to my PC HDD?

Also, what would i need to do this and can it be done on a £40 price budget?

Im looking to produce youtube video's, so i would be wanting pretty high quality recordings. something like this: http://www.youtube.com/watch?v=7XX [...] annel_page

Any help would be much appreciated

Do u know of a good quality one? because im not too good with these sorts of things

Really? without a video card or anything?
How would it work?

Im confused :S

so lets say, if i buy this, would i get the origional xbox av cable, put the 3 pins into this (the 3 female coloured thingys) then would i plug the A/V part of the wire into the big usb thing. then would i plug that into my PC and be able to play my xbox through my PC.

Im assuming i would need software for this though, or would it come with software to do this?

Yeah, ill probably buy that cable thing seperatley and get a tv tuner card for my pc.

They seem to have better ratings and they are around 60/70 dollards, which is around £40.