The ones I see have "lag" and that will make gameplay no fun.
Look for a PC-Card video capture card.
I currently have a HP ZE4805us. I only have s-video and i want AVI so i can play my XBOX on my labtop when someone is hogging my tv (my bro). What i am wondering is, is there any AVI input devices that i can get that are USB? Or if there anything that anyone can reccommend for me to do? Thanks in advance.