>OK , but I don´t have instaled any version of Clipper to see the tables and make the changes, and you´re right, when I´d open the tables in Fox, it showed me a warning message that say something like this "If you open this files here, you won´t be able to open them in previous versions of Visual Fox Pro. Do you Accept?" and, ´cause I don´t have Clipper, well, I opened it and made my changes.
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>Which version of Clipper do you recommend me to install and then delete the records from a selected tables. Then, rebuild the index file and run my application without troubles!!

No matter which version of CLIPPER you will have, last version was CLIPPER 5.3, but you will have the same problems with it. Either convert whole application to VFP, either maintain your DBFs from CLIPPER not from VFP. In your CLIPPER folder you must have an utility named DBU, maintain files with it, not from VFP.