>need some ocx, class or application for compress dbf files
Option 1: Use your favorite compression program, with command-line parameters. The problem here is that it isn't easy to find out whether the compression was successful.
Option 2: Search in the download section for "compression" - I think there are some downloads there.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)