1) Can I just load the data on a USB device?

You will install the DSS Lite on a USB flash stick 1GB or more. Instructions are available from the notes.

2) During this process can something be damaged, or will it be possible to re-create the RAID level later on easy?

Best is to back up your data then create the RAID set but we dont have support for DSS Lite only on the forums and there is no support for RAID controllers for the DSS Lite. There will be support for DSS Lite soon, most likely later this month or next. You can always upgrade to DSS V6 professional version as well. See link below.

http://www.open-e.com/store/

3) Do you have access to the drivers which are used for the b.center? I got the hint, open-e has designed the previous installation.

We think the drivers will be in the DSS Lite but no support is for DSS Lite only from the Forum or purchasing support for DSS Lite.