1. Go to the Youtube website.
2. Search for the desired video.
3. Copy the URL of the video,at the top of the page(eg: http://m.youtube.com/index?&desktop_uri=%2F).
4. Then you open another tab.
5. On the new tab,you go to either of these two websites(if one doesn't work,the other should):
http://en.savefrom.net/
OR
http://www.keepvid.com
6. Then,on the site,look for the space(a box) where you can paste the link of the video which you copied in step 3. Click 'Enter'.
7. If all things go well,the site should bring out the video and then ask you to choose a format which you want to download it in(eg MP4,MP3,3GP etc).
8. Choose your desired format and download away. If things go well. You should have your video.

Please let me know if it worked for you.

Just made use of the keepvid.com with operamini It worked. This will count among the few tricks I have got on this site that are not phoney.
Thanks for sharing.

Thanks Man ! It Works Well !

You're both welcome.

I always download video to computer with youtube video downloader, after using a free video downloader from Firecoresoft, I think it is a good software, it worth to have a try! http://www.firecoresoft.com/free-video-downloader.html