DBF is not supported as standard.

It is possible, but you need extra programm.

AutoGen_1065723

Thank you,

you have any experience? Which one would you recommend? I tried different, but few of them who can do automatic conversion. dbf at preset intervals.

Please check this links, there will be more at the WWW:

http://exceltodbf.sourceforge.net/ 

http://thexlwiz.blogspot.ch/2011/03/savedbf-excel-addin-new-version-is-now.html

Doing automatic conversion. dbf at preset intervals:

Try to use "StartProgram" Function in a WCCadv. script.
So you may be able to to the convesrio at requested time, if program supports the command line.