good back up software

I just bought a 60gb external USB 2.0 HDD as a backup for my 80GB 5400RPM SATA HDD (NTFS). i was going to install comodo backup but while researching good back up software, i came across disk imaging/cloning and products such as acronis true image home and such. i want something free (yea…i’m used to good free software (L)). i came across driveimage xml on this page:

i was wondering if anyone could recommend some good cloning software. like i said, this is all new to me. i’m used to just file/folder backing up so any help would be appreciated.