I'm new to computers & backups & Acronis!! I have made a backup of my hard drive & want to do an incremental backup but have got part way & am stumped about what to do next. I'm uploading (I hope) a screenshot of where I got to. I was told to select the folder to backup so I clicked drive C & the next button greyed out. Help please & what should I do? I have tried the on-board Help but cannot see any easy-step information about what I should do. Thanks.