Re: youtube zone of the enders
It'll depend on your video card, most modern ones will allow you to plug a HDMI cable straight in but for the PS2 you'll need one like this...
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(Pardon the huge picture)
If your video card supports the input, which will be a round plug with 7 pins and a plastic seperator below them, you can plug the AV cables into the card that way. Once they're in you just need to use some capturing software, I think Windows Movie Maker actually does it natively so that's a free solution. The capturing software will allow you to play the game on your monitor and it will capture 1:1 what get's input. After that your quality is going to be controlled what codec is used to encode the video (read: What format you save it in) and by YouTube's compression algorithm when you upload it.
As for the wizard bit...no, but I've done a few YouTube videos with/for friends and as the techie of the group I usually get lumped with this stuff.