I finally decided to dive in with an online backup of my files. I have two systems that need backups so I decided to use MozyPro as their prices are good and if Hanselman uses them, they can't be that bad. My big pain point with online backup is my behemouth .pst files. I have two of them...my working .pst and an archive .pst. Totaling about 2 GB total, I need a solution that can back up these files without re-uploading the entire file everytime. Mozy promises this...after the first backup.