Backup computer hard drive to WD Passport Essential 2.0

How do I backup up my entire computer hard drive to my Passport Essential? It is installed correctly on Vista and I have a shortcut on my desktop.

Will this copy OS Vista as well?

As far as I know, you won’t be able to do a full backup of your computer including the OS with the backup software that comes with the passport, it will only backup the files like music, movies, documents pictures and mail.

If you would like to do a full backup, you will need a third party software.  Try the link below,or.r_gc.r_pw.r_cp.r_qf.&fp=2809c18855421a6f&biw=1280&bih=923