>My server doesn't start any more. When I try to boot from the CD-Rom and access the C disks, I can issue a dir command which lists all files directory but when I try to access one of these files it is giving me a message that the FAT table is damaged.
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>Though I have backups of the most important files and directory, I will lose some personal stuff. Is there a utility which can recover the C-disk from a FAT corruption or at least recover some files ?

I've seen cases where FDISKing (repartitioning) the drive with the exact same partition size has restored access to files, but that's pretty rare. If you have to have these files (and can afford it) I'd take the drive to a data recovery service...