Absolutley, but why dont you sort on your web service or
eg: if you are pulling the data from a sql server return as
xml, but before you return sort the table by date.
eg: if you are pulling the data from a file, load the xml
into the datagrid using databinding and im sure the flex 2 datagrid
has some sort features you can invoke. Either by clicking the title
when enabled to sort or sortion with an AS3 function.