Hi

I am interested in purchasing KeepSafe and have a few questions before I purchase:

1) Does KeepSafe work at the file or block level? I.e. If I change a large file is the whole file copied or just the blocks that changed?

2) Does KeepSafe work with encryoted files in WIndows XP Pro?

3) Will it work with the pst file in MS Outlook? I.e. if I received a new email will the local pst file be backed up?

4) Will KeepSafe run on Windows Vista when it is available to general public in January?

Many thanks