How do I override date formating in Plugin data source?

[KirkKuykendall]

I have a plugin datasource.  When an arcmap user queries a layer by attributes from my plugin, and lists all the unique values for a Date field, the format is: #11-11-1999 00:00:00#.  Is there anyway I can override this?

My implementation of IPluginWorkspaceFactoryHelper returns true for CanSupportSQL.