Ah, ok!
The version is 2.1 and the release 218A.
The problem is that I don't know the version of Clarion with which was made the application that generated the data I want to migrate to Access, and I can´t discover it... The fact is that the Exe file (the Clarion application) was last modified in June 1992 and the ccvt.exe I have, was last modified in March 1992, so it's possible that the data format could be newer than the one that my ccvt.exe supports.
On the other side, I'm sure the data can't be corrupted, because I can read it perfectly with the clarion app (ANDRES.EXE is called) that generated all this data.
well, I keep on searching, thanks again gearhead!