I ran into an issue with model builder where I was calculating a string field to a new numberic (integer field). The majority of the data in my string field were valid integer values but there were 2 or 3 records that had alpha characters in the data. When I manually run the tool in th model I get the normal warning from the field calculator that it has encountered a record that can not be converted but I have the ability to continue an process the rest of the rows, while the offending values/rows are skipped. I was okay with skipping the rows but didn't want to have to answer the warning dialog each time I run the model/tool. I would like an option to supress warning dialogs of all kinds in model builder. This would be similar to supressing warning messages in MS Access when you run a series of macros. If a model/tool/python script stops to prompt the user each time there is a not-fatal error, such as this warning, it ruins the ability to autmoate the process using scripting techniques.