loren,I'll show you how to save any thing from youtube into your computer, go to one of these sites
http://www.videodl.org
or
http://keepvid.com
and then copy the link that appear under the video and paste it in one of those sites, and the rest you'll understand it from the site instructions, I wish I help you with this
and thank you

I said the reason before, I'm using the Internet from work,and the company is using a proxy which blocked lots of things, one of these is Youtube web page, that's why I'm asking for help

لا هذه ما كنت اعرفها....
اوكي ولا يهمك ...