Hi Paps
You can also use a program called "
YouTube Downloader" that is totally
free from this site:
http://youtubedownload.altervista.org/.

It's also just 2.96 MB in size.
I've been using this software for over a year now and I love it.

It's very easy to use and it downloads the file directly to your PC. After that you also have the option to convert the file to any format you like. I personally don't convert it, as the downloaded file can play on my PC without me needing to change it!
Cheers,