Extract Files from split backups.

[dakwegmo]

I used the backup tools in Plesk to backup one of my websites. The site is nearly 18 GB, so I used the option to create multivolume backups, so I could save the files on CD or DVD. I want to verify the backup, but all of the methods I've found for extracting the data don't seem to work on multivolume backups.

Is there any way for me to extract the data from these files on a windows system? If not, can anyone recommend a good script/application for automatically creating multivolume backups of files on a linux web server that can then be opened on a windows system?