GedTool is a collection of Excel macros for processing of GEDCOM files. All functions are started from a common menu interface. With GedTool all fields from a GEDCOM file can be converted into an Excel file. Once in Excel, they will be changed and written back. The same process can be used for creating a completely new Gedcom from and Excel worksheet in various layouts. The program is written by Peter Schulz and works in both English and German.
It can be obtained by emailing Peter is is available as shareware with a one month trial version. Details here http://www.genealogienetz.de/misc/software/hilfsprogramme/gedtool.html and http://wiki-de.genealogy.net/