Like most of these zip programs you can change the compression format off the command line. So set a command line on your compiler and follow it. The documentation to Z-Zip says Type switches Switch: -t7z Format: 7Z Example filename: archive.7z (default option) Switch: -tgzip Format: GZIP Example filename: archive.gzip, archive.gz Switch: -tzip Format: ZIP Example filename: archive.zip (compatible) Switch: -tbzip2 Format: BZIP2 Example filename: archive.bzip2 Switch: -ttar Format: TAR Example filename: tarball.tar (UNIX and Linux) Switch: -tiso Format: ISO Example filename: image.iso (may not be supported) Switch: -tudf Format: UDF Example filename: disk.udf So setup a command line to some file with -tZip and follow what it does. In vino veritas

just a sec...my english is not so good :) let me rephrase every thing: - You have a datagridview with 2 columns. - Now this datagridview displays a text from a DataSet. (Till here its fine.) Quote: and set an integer field in the target record based on the text field selected in a combobox. - This is confusing:confused: Quote: One can display the appropriate text values with the drop down, but nothing gets set. What's making me crazy is that that form, if pulled out of the project, made a standalone in its own project, hitting the same database, of identical dataset and everything else I can find, works fine. You have clubbed so many things in just one sentence. Its hard to simulate what you are saying(It is also my lack of knowledge)but i request you to put forth a simpler version of this question. Thanks