Ramil,
>I think the table is corrupted so that when I type from the command window:
>
>use tablename in 0
>
It sounds like it is corrupt. There are some utilities in the download section that may help. Also, you can use a hex editor to view the file and determine if there is any data to salvage. If everything is "0000" then there isn't.
>I've downloaded SDT 6.0 but I don't know how I can use the Repair method. Is this demo "locked" to the Sample DBC it came with?
Yes, SDT does not allow a working version of the demo. Why would you buy it if it resolved your problem? :-)
Renoir