>Are there any utilites, either within Visual FoxPro or third-party, that can detect and repair corrupted DBC files?

It is best to prevent the need to use the utility. Each time you alter the DBC, just use the DOS copy command to make a backup of it. If the the DBC ever corrupts just copy the backup back over the live. Whammo blammo you are back in business in less than 2 seconds.